diff --git a/JsClients/ERC20/src/erc20.ts b/JsClients/ERC20/src/erc20.ts
index 40975c17..a4e71115 100644
--- a/JsClients/ERC20/src/erc20.ts
+++ b/JsClients/ERC20/src/erc20.ts
@@ -193,11 +193,14 @@ class ERC20Client {
     return maybeValue.value().toString();
   }
 
-  public async allowance(owner: string, spender:string) {
+  public async allowance(owner:string, spender:string) {
     try {
-      
-      const keyOwner = createRecipientAddress(CLPublicKey.fromHex(owner));
-      const keySpender = createRecipientAddress(CLPublicKey.fromHex(spender));
+      const _spender = new CLByteArray(
+        Uint8Array.from(Buffer.from(spender, "hex"))
+      );
+
+      const keyOwner=new CLKey(new CLAccountHash(Uint8Array.from(Buffer.from(owner, "hex"))));
+      const keySpender = createRecipientAddress(_spender);
       const finalBytes = concat([CLValueParsers.toBytes(keyOwner).unwrap(), CLValueParsers.toBytes(keySpender).unwrap()]);
       const blaked = blake.blake2b(finalBytes, undefined, 32);
       const encodedBytes = Buffer.from(blaked).toString("hex");
@@ -211,7 +214,7 @@ class ERC20Client {
       const maybeValue = result.value().unwrap();
       return maybeValue.value().toString();
     } catch (error) {
-      return "0";
+      return error;
     }
 
   }
diff --git a/JsClients/ERC20/test/installed.ts b/JsClients/ERC20/test/installed.ts
index a35adb07..15d85677 100644
--- a/JsClients/ERC20/test/installed.ts
+++ b/JsClients/ERC20/test/installed.ts
@@ -11,6 +11,7 @@ import {
   CLAccountHash,
   CLPublicKeyType,
   Contracts,
+  CLByteArray
 } from "casper-js-sdk";
 
 const { ERC20Events } = constants;
@@ -241,21 +242,19 @@ export const balanceOf = async (contractHash:string, key:string) => {
 
 };
 
-export const allowance = async (contractHash:string, ownerKey:string, spenderkey:string) => {
+export const allowance = async (contractHash:string, ownerkey:string, spenderkey:string) => {
   
   console.log(`... Contract Hash: ${contractHash}`);
 
   // We don't need hash- prefix so i'm removing it
   await erc20.setContractHash(contractHash);
 
- //balanceof
-  let allowance = await erc20.allowance(ownerKey,spenderkey);
+  let allowance = await erc20.allowance(ownerkey,spenderkey);
 
   console.log(`... Allowance: ${allowance}`);
 
   return allowance;
 
 };
-//console.log(KEYS.publicKey);
-//console.log(CLPublicKey.fromHex("015a5b4ae1e1ff10fd610c7d6323d3c331438a81eef7bcd3aa4783f6f264fa3aa4"));
-//allowance("6ab4a5bf100fb9f444a12e92c663e3cf65a8c3ef4523cb2f80bed4fd41f85706","8b217a09296d5ce360847a7d20f623476157c5f022333c4e988a464035cadd80","8a74e1ae230936013f3b544182b8011435f4a457d9444fa879ab483fdf829dc8");
\ No newline at end of file
+
+allowance("b761da7d5ef67f8825c30c40df8b72feca4724eb666dba556b0e3f67778143e0","8b217a09296d5ce360847a7d20f623476157c5f022333c4e988a464035cadd80","8a74e1ae230936013f3b544182b8011435f4a457d9444fa879ab483fdf829dc8");
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index bd079cf9..1b6be62a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,24 +5,24 @@
   "requires": true,
   "dependencies": {
     "@babel/code-frame": {
-      "version": "7.16.0",
-      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.16.0.tgz",
-      "integrity": "sha512-IF4EOMEV+bfYwOmNxGzSnjR2EmQod7f1UXOpZM3l4i4o4QNwzjtJAu/HxdjHq0aYBvdqMuQEY1eg0nqW9ZPORA==",
+      "version": "7.16.7",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.16.7.tgz",
+      "integrity": "sha512-iAXqUn8IIeBTNd72xsFlgaXHkMBMt6y4HJp1tIaK465CWLT/fG1aqB7ykr95gHHmlBdGbFeWWfyB4NJJ0nmeIg==",
       "requires": {
-        "@babel/highlight": "^7.16.0"
+        "@babel/highlight": "^7.16.7"
       }
     },
     "@babel/helper-validator-identifier": {
-      "version": "7.15.7",
-      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.15.7.tgz",
-      "integrity": "sha512-K4JvCtQqad9OY2+yTU8w+E82ywk/fe+ELNlt1G8z3bVGlZfn/hOcQQsUhGhW/N+tb3fxK800wLtKOE/aM0m72w=="
+      "version": "7.16.7",
+      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.16.7.tgz",
+      "integrity": "sha512-hsEnFemeiW4D08A5gUAZxLBTXpZ39P+a+DGDsHw1yxqyQ/jzFEnxf5uTEGp+3bzAbNOxU1paTgYS4ECU/IgfDw=="
     },
     "@babel/highlight": {
-      "version": "7.16.0",
-      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.16.0.tgz",
-      "integrity": "sha512-t8MH41kUQylBtu2+4IQA3atqevA2lRgqA2wyVB/YiWmsDSuylZZuXOUy9ric30hfzauEFfdsuk/eXTRrGrfd0g==",
+      "version": "7.16.7",
+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.16.7.tgz",
+      "integrity": "sha512-aKpPMfLvGO3Q97V0qhw/V2SWNWlwfJknuwAunU7wZLSfrM4xTBvg7E5opUVi1kJTBKihE38CPg4nBiqX83PWYw==",
       "requires": {
-        "@babel/helper-validator-identifier": "^7.15.7",
+        "@babel/helper-validator-identifier": "^7.16.7",
         "chalk": "^2.0.0",
         "js-tokens": "^4.0.0"
       },
@@ -57,19 +57,6 @@
           "version": "1.1.3",
           "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
           "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU="
-        },
-        "has-flag": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
-          "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0="
-        },
-        "supports-color": {
-          "version": "5.5.0",
-          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
-          "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
-          "requires": {
-            "has-flag": "^3.0.0"
-          }
         }
       }
     },
@@ -187,18 +174,18 @@
       }
     },
     "@types/eslint": {
-      "version": "8.2.1",
-      "resolved": "https://registry.npmjs.org/@types/eslint/-/eslint-8.2.1.tgz",
-      "integrity": "sha512-UP9rzNn/XyGwb5RQ2fok+DzcIRIYwc16qTXse5+Smsy8MOIccCChT15KAwnsgQx4PzJkaMq4myFyZ4CL5TjhIQ==",
+      "version": "8.2.2",
+      "resolved": "https://registry.npmjs.org/@types/eslint/-/eslint-8.2.2.tgz",
+      "integrity": "sha512-nQxgB8/Sg+QKhnV8e0WzPpxjIGT3tuJDDzybkDi8ItE/IgTlHo07U0shaIjzhcvQxlq9SDRE42lsJ23uvEgJ2A==",
       "requires": {
         "@types/estree": "*",
         "@types/json-schema": "*"
       }
     },
     "@types/eslint-scope": {
-      "version": "3.7.1",
-      "resolved": "https://registry.npmjs.org/@types/eslint-scope/-/eslint-scope-3.7.1.tgz",
-      "integrity": "sha512-SCFeogqiptms4Fg29WpOTk5nHIzfpKCemSN63ksBQYKTcXoJEmJagV+DhVmbapZzY4/5YaOV1nZwrsU79fFm1g==",
+      "version": "3.7.3",
+      "resolved": "https://registry.npmjs.org/@types/eslint-scope/-/eslint-scope-3.7.3.tgz",
+      "integrity": "sha512-PB3ldyrcnAicT35TWPs5IcwKD8S333HMaa2VVv4+wdvebJkjWuW/xESoB8IwRcog8HYVYamb1g/R31Qv5Bx03g==",
       "requires": {
         "@types/eslint": "*",
         "@types/estree": "*"
@@ -220,9 +207,9 @@
       "integrity": "sha512-qcUXuemtEu+E5wZSJHNxUXeCZhAfXKQ41D+duX+VYPde7xyEVZci+/oXKJL13tnRs9lR2pr4fod59GT6/X1/yQ=="
     },
     "@types/node": {
-      "version": "16.11.12",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-16.11.12.tgz",
-      "integrity": "sha512-+2Iggwg7PxoO5Kyhvsq9VarmPbIelXP070HMImEpbtGCoyWNINQj4wzjbQCXzdHTRXnqufutJb5KAURZANNBAw=="
+      "version": "17.0.5",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-17.0.5.tgz",
+      "integrity": "sha512-w3mrvNXLeDYV1GKTZorGJQivK6XLCoGwpnyJFbJVK/aTBQUxOCaa/GlFAAN3OTDFcb7h5tiFG+YXCO2By+riZw=="
     },
     "@types/pbkdf2": {
       "version": "3.1.0",
@@ -418,9 +405,9 @@
       }
     },
     "acorn": {
-      "version": "7.1.1",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.1.1.tgz",
-      "integrity": "sha512-add7dgA5ppRPxCFJoAGfMDi7PIBXq1RtGo7BhbLaxwrXPOmw8gq48Y9ozT01hUKy9byMjlR20EJhu5zlkErEkg=="
+      "version": "2.7.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-2.7.0.tgz",
+      "integrity": "sha1-q259nYhqrKiwhbwzEreaGYQz8Oc="
     },
     "acorn-globals": {
       "version": "1.0.9",
@@ -428,13 +415,6 @@
       "integrity": "sha1-VbtemGkVB7dFedBRNBMhfDgMVM8=",
       "requires": {
         "acorn": "^2.1.0"
-      },
-      "dependencies": {
-        "acorn": {
-          "version": "2.7.0",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-2.7.0.tgz",
-          "integrity": "sha1-q259nYhqrKiwhbwzEreaGYQz8Oc="
-        }
       }
     },
     "acorn-import-assertions": {
@@ -602,13 +582,6 @@
       "integrity": "sha512-NF+epuEdnUYVlGuhaxbbq+dvJttwLnGY+YixlXlME5KpQ5W3CnXA5cVTneY3SPbPDRkcjMbifrwmFYcClgOZeg==",
       "requires": {
         "safe-buffer": "5.1.2"
-      },
-      "dependencies": {
-        "safe-buffer": {
-          "version": "5.1.2",
-          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
-          "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
-        }
       }
     },
     "bcrypt-pbkdf": {
@@ -690,9 +663,9 @@
       },
       "dependencies": {
         "camelcase": {
-          "version": "6.2.1",
-          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-6.2.1.tgz",
-          "integrity": "sha512-tVI4q5jjFV5CavAU8DXfza/TJcZutVKo/5Foskmsqcm0MsL91moHvwiGNnqaa2o6PF/7yT5ikDRcVcl8Rj6LCA=="
+          "version": "6.3.0",
+          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-6.3.0.tgz",
+          "integrity": "sha512-Gmy6FhYlCY7uOElZUSbxo2UCDH8owEk996gkbrpsgGtrJLM3J7jGxl9Ic7Qwwj4ivOE5AWZWRMecDdF7hqGjFA=="
         }
       }
     },
@@ -762,9 +735,9 @@
       }
     },
     "bson": {
-      "version": "4.6.0",
-      "resolved": "https://registry.npmjs.org/bson/-/bson-4.6.0.tgz",
-      "integrity": "sha512-8jw1NU1hglS+Da1jDOUYuNcBJ4cNHCFIqzlwoFNnsTOg2R/ox0aTYcTiBN4dzRa9q7Cvy6XErh3L8ReTEb9AQQ==",
+      "version": "4.6.1",
+      "resolved": "https://registry.npmjs.org/bson/-/bson-4.6.1.tgz",
+      "integrity": "sha512-I1LQ7Hz5zgwR4QquilLNZwbhPw0Apx7i7X9kGMBTsqPdml/03Q9NBtD9nt/19ahjlphktQImrnderxqpzeVDjw==",
       "requires": {
         "buffer": "^5.6.0"
       }
@@ -833,9 +806,9 @@
       "integrity": "sha1-m7UwTS4LVmmLLHWLCKPqqdqlijk="
     },
     "caniuse-lite": {
-      "version": "1.0.30001286",
-      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001286.tgz",
-      "integrity": "sha512-zaEMRH6xg8ESMi2eQ3R4eZ5qw/hJiVsO/HlLwniIwErij0JDr9P+8V4dtx1l+kLq6j3yy8l8W4fst1lBnat5wQ=="
+      "version": "1.0.30001300",
+      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001300.tgz",
+      "integrity": "sha512-cVjiJHWGcNlJi8TZVKNMnvMid3Z3TTdDHmLDzlOdIiZq138Exvo0G+G0wTdVYolxKb4AYwC+38pxodiInVtJSA=="
     },
     "caseless": {
       "version": "0.12.0",
@@ -843,9 +816,9 @@
       "integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw="
     },
     "casper-js-sdk": {
-      "version": "2.7.3",
-      "resolved": "https://registry.npmjs.org/casper-js-sdk/-/casper-js-sdk-2.7.3.tgz",
-      "integrity": "sha512-LChaBRgeSb0B3yQ9akppQLxbb+JdrpF35+YkE0Cndqho5v28MclVejxayD/Put0xSfwDMBRxKLh/ILNKUFsaTg==",
+      "version": "2.7.5",
+      "resolved": "https://registry.npmjs.org/casper-js-sdk/-/casper-js-sdk-2.7.5.tgz",
+      "integrity": "sha512-SsQRARCxFFuycTEN+mq9IKNf7zv+Bc0mbWfKCR2woh0ucLN21hQigIWTKoIf7nsx58tNDJg4wgt4jhJfKJaFKg==",
       "requires": {
         "@ethersproject/bignumber": "^5.0.8",
         "@ethersproject/bytes": "^5.0.5",
@@ -886,6 +859,11 @@
         "supports-color": "^7.1.0"
       },
       "dependencies": {
+        "has-flag": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
+          "integrity": "sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ=="
+        },
         "supports-color": {
           "version": "7.2.0",
           "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
@@ -951,14 +929,6 @@
           "requires": {
             "graceful-readlink": ">= 1.0.0"
           }
-        },
-        "source-map": {
-          "version": "0.4.4",
-          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.4.4.tgz",
-          "integrity": "sha1-66T12pwNyZneaAMti092FzZSA2s=",
-          "requires": {
-            "amdefine": ">=0.0.4"
-          }
         }
       }
     },
@@ -1014,9 +984,9 @@
       }
     },
     "commander": {
-      "version": "2.20.3",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
-      "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ=="
+      "version": "2.6.0",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.6.0.tgz",
+      "integrity": "sha1-nfflL7Kgyw+4kFjugMMQQiXzfh0="
     },
     "concat-map": {
       "version": "0.0.1",
@@ -1042,13 +1012,6 @@
       "integrity": "sha1-S5RdmTeQe82Y7ldRIsOBdRZUQUE=",
       "requires": {
         "acorn": "^2.1.0"
-      },
-      "dependencies": {
-        "acorn": {
-          "version": "2.7.0",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-2.7.0.tgz",
-          "integrity": "sha1-q259nYhqrKiwhbwzEreaGYQz8Oc="
-        }
       }
     },
     "content-disposition": {
@@ -1121,13 +1084,6 @@
       "integrity": "sha512-1eAtFWdIubi6T4XPy6ei9iUFoKpUkIF971QLN8lIvvvwueI65+Nw5haMNKUwfJxabqlIIDODJKGrQ66gxC0PbQ==",
       "requires": {
         "node-fetch": "2.6.1"
-      },
-      "dependencies": {
-        "node-fetch": {
-          "version": "2.6.1",
-          "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.1.tgz",
-          "integrity": "sha512-V4aYg89jEoVRxRb2fJdAg8FHvI7cEyYdVAh94HH0UIK8oJxUfkjlDQN9RbMx+bEjP7+ggMiFRprSti032Oipxw=="
-        }
       }
     },
     "crypto-random-string": {
@@ -1266,6 +1222,13 @@
         "es6-promise": "4.2.8",
         "nan": "2.14.0",
         "secp256k1": "3.7.1"
+      },
+      "dependencies": {
+        "acorn": {
+          "version": "7.1.1",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.1.1.tgz",
+          "integrity": "sha512-add7dgA5ppRPxCFJoAGfMDi7PIBXq1RtGo7BhbLaxwrXPOmw8gq48Y9ozT01hUKy9byMjlR20EJhu5zlkErEkg=="
+        }
       }
     },
     "ee-first": {
@@ -1274,9 +1237,9 @@
       "integrity": "sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0="
     },
     "electron-to-chromium": {
-      "version": "1.4.17",
-      "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.4.17.tgz",
-      "integrity": "sha512-zhk1MravPtq/KBhmGB7TLBILmXTgRG9TFSI3qS3DbgyfHzIl72iiTE37r/BHIbPCJJlWIo5rySyxiH4vWhu2ZA=="
+      "version": "1.4.47",
+      "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.4.47.tgz",
+      "integrity": "sha512-ZHc8i3/cgeCRK/vC7W2htAG6JqUmOUgDNn/f9yY9J8UjfLjwzwOVEt4MWmgJAdvmxyrsR5KIFA/6+kUHGY0eUA=="
     },
     "elliptic": {
       "version": "6.5.4",
@@ -1290,6 +1253,13 @@
         "inherits": "^2.0.4",
         "minimalistic-assert": "^1.0.1",
         "minimalistic-crypto-utils": "^1.0.1"
+      },
+      "dependencies": {
+        "inherits": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+          "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+        }
       }
     },
     "emoji-regex": {
@@ -1419,11 +1389,11 @@
       },
       "dependencies": {
         "secp256k1": {
-          "version": "4.0.2",
-          "resolved": "https://registry.npmjs.org/secp256k1/-/secp256k1-4.0.2.tgz",
-          "integrity": "sha512-UDar4sKvWAksIlfX3xIaQReADn+WFnHvbVujpcbr+9Sf/69odMwy2MUsz5CKLQgX9nsIyrjuxL2imVyoNHa3fg==",
+          "version": "4.0.3",
+          "resolved": "https://registry.npmjs.org/secp256k1/-/secp256k1-4.0.3.tgz",
+          "integrity": "sha512-NLZVf+ROMxwtEj3Xa562qgv2BK5e2WNmXPiOdVIPLgs6lyTzMvBq0aWTYMI5XCP9jZMVKOcqZLw/Wc4vDkuxhA==",
           "requires": {
-            "elliptic": "^6.5.2",
+            "elliptic": "^6.5.4",
             "node-addon-api": "^2.0.0",
             "node-gyp-build": "^4.2.0"
           }
@@ -1485,11 +1455,6 @@
           "version": "0.3.1",
           "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.3.1.tgz",
           "integrity": "sha1-5+Ch+e9DtMi6klxcWpboBtFoc7s="
-        },
-        "safe-buffer": {
-          "version": "5.1.2",
-          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
-          "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
         }
       }
     },
@@ -1529,6 +1494,11 @@
             "safer-buffer": ">= 2.1.2 < 3"
           }
         },
+        "inherits": {
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+      "version": "5.5.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+      "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
       "requires": {
-        "has-flag": "^4.0.0"
+        "has-flag": "^3.0.0"
       }
     },
+    "supports-preserve-symlinks-flag": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/supports-preserve-symlinks-flag/-/supports-preserve-symlinks-flag-1.0.0.tgz",
+      "integrity": "sha512-ot0WnXS9fgdkgIcePe6RHNk1WA8+muPa6cSjeR3V8K27q9BB1rTE3R1p7Hv0z1ZyAc8s6Vvv8DIyWf681MAt0w=="
+    },
     "tapable": {
       "version": "2.2.1",
       "resolved": "https://registry.npmjs.org/tapable/-/tapable-2.2.1.tgz",
@@ -3150,6 +3117,11 @@
         "source-map-support": "~0.5.20"
       },
       "dependencies": {
+        "commander": {
+          "version": "2.20.3",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
+          "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ=="
+        },
         "source-map": {
           "version": "0.7.3",
           "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.7.3.tgz",
@@ -3158,15 +3130,22 @@
       }
     },
     "terser-webpack-plugin": {
-      "version": "5.2.5",
-      "resolved": "https://registry.npmjs.org/terser-webpack-plugin/-/terser-webpack-plugin-5.2.5.tgz",
-      "integrity": "sha512-3luOVHku5l0QBeYS8r4CdHYWEGMmIj3H1U64jgkdZzECcSOJAyJ9TjuqcQZvw1Y+4AOBN9SeYJPJmFn2cM4/2g==",
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/terser-webpack-plugin/-/terser-webpack-plugin-5.3.0.tgz",
+      "integrity": "sha512-LPIisi3Ol4chwAaPP8toUJ3L4qCM1G0wao7L3qNv57Drezxj6+VEyySpPw4B1HSO2Eg/hDY/MNF5XihCAoqnsQ==",
       "requires": {
-        "jest-worker": "^27.0.6",
+        "jest-worker": "^27.4.1",
         "schema-utils": "^3.1.1",
         "serialize-javascript": "^6.0.0",
         "source-map": "^0.6.1",
         "terser": "^5.7.2"
+      },
+      "dependencies": {
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g=="
+        }
       }
     },
     "to-readable-stream": {
@@ -3205,9 +3184,12 @@
       }
     },
     "tr46": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/tr46/-/tr46-0.0.3.tgz",
-      "integrity": "sha1-gYT9NH2snNwYWZLzpmIuFLnZq2o="
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-3.0.0.tgz",
+      "integrity": "sha512-l7FvfAHlcmulp8kr+flpQZmVwtu7nfRV7NZujtN0OqES8EL4O4e0qqzL0DC5gAvx/ZC/9lk6rhcUwYvkBnBnYA==",
+      "requires": {
+        "punycode": "^2.1.1"
+      }
     },
     "transformers": {
       "version": "2.1.0",
@@ -3271,9 +3253,9 @@
       },
       "dependencies": {
         "acorn": {
-          "version": "8.6.0",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.6.0.tgz",
-          "integrity": "sha512-U1riIR+lBSNi3IbxtaHOIKdH8sLFv3NYfNv8sg7ZsNhcfl4HF2++BfqqrNAxoCLQW1iiylOj76ecnaUxz+z9yw=="
+          "version": "8.7.0",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.7.0.tgz",
+          "integrity": "sha512-V/LGr1APy+PXIwKebEWrkZPwoeoF+w1jiOBUmuxuiUIaOHtob8Qc9BTrYo7VuI5fR8tqsy+buA2WFooR5olqvQ=="
         }
       }
     },
@@ -3338,18 +3320,10 @@
           "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
           "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU="
         },
-        "has-flag": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
-          "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0="
-        },
-        "supports-color": {
-          "version": "5.5.0",
-          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
-          "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
-          "requires": {
-            "has-flag": "^3.0.0"
-          }
+        "commander": {
+          "version": "2.20.3",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
+          "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ=="
         }
       }
     },
@@ -3567,14 +3541,14 @@
       }
     },
     "webidl-conversions": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
-      "integrity": "sha1-JFNCdeKnvGvnvIZhHMFq4KVlSHE="
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-7.0.0.tgz",
+      "integrity": "sha512-VwddBukDzu71offAQR975unBIGqfKZpM+8ZX6ySk8nYhVoo5CYaZyzt3YBvYtRtO+aoGlqxPg/B87NGVZ/fu6g=="
     },
     "webpack": {
-      "version": "5.65.0",
-      "resolved": "https://registry.npmjs.org/webpack/-/webpack-5.65.0.tgz",
-      "integrity": "sha512-Q5or2o6EKs7+oKmJo7LaqZaMOlDWQse9Tm5l1WAfU/ujLGN5Pb0SqGeVkN/4bpPmEqEP5RnVhiqsOtWtUVwGRw==",
+      "version": "5.66.0",
+      "resolved": "https://registry.npmjs.org/webpack/-/webpack-5.66.0.tgz",
+      "integrity": "sha512-NJNtGT7IKpGzdW7Iwpn/09OXz9inIkeIQ/ibY6B+MdV1x6+uReqz/5z1L89ezWnpPDWpXF0TY5PCYKQdWVn8Vg==",
       "requires": {
         "@types/eslint-scope": "^3.7.0",
         "@types/estree": "^0.0.50",
@@ -3590,7 +3564,7 @@
         "eslint-scope": "5.1.1",
         "events": "^3.2.0",
         "glob-to-regexp": "^0.4.1",
-        "graceful-fs": "^4.2.4",
+        "graceful-fs": "^4.2.9",
         "json-parse-better-errors": "^1.0.2",
         "loader-runner": "^4.2.0",
         "mime-types": "^2.1.27",
@@ -3603,16 +3577,16 @@
       },
       "dependencies": {
         "acorn": {
-          "version": "8.6.0",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.6.0.tgz",
-          "integrity": "sha512-U1riIR+lBSNi3IbxtaHOIKdH8sLFv3NYfNv8sg7ZsNhcfl4HF2++BfqqrNAxoCLQW1iiylOj76ecnaUxz+z9yw=="
+          "version": "8.7.0",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.7.0.tgz",
+          "integrity": "sha512-V/LGr1APy+PXIwKebEWrkZPwoeoF+w1jiOBUmuxuiUIaOHtob8Qc9BTrYo7VuI5fR8tqsy+buA2WFooR5olqvQ=="
         }
       }
     },
     "webpack-sources": {
-      "version": "3.2.2",
-      "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-3.2.2.tgz",
-      "integrity": "sha512-cp5qdmHnu5T8wRg2G3vZZHoJPN14aqQ89SyQ11NpGH5zEMDCclt49rzo+MaRazk7/UeILhAI+/sEtcM+7Fr0nw=="
+      "version": "3.2.3",
+      "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-3.2.3.tgz",
+      "integrity": "sha512-/DyMEOrDgLKKIG0fmvtz+4dUX/3Ghozwgm6iPp8KRhvn+eQf9+Q7GWxVNMk3+uCPWfdXYC4ExGBckIXdFEfH1w=="
     },
     "whatwg-fetch": {
       "version": "3.6.2",
@@ -3620,12 +3594,12 @@
       "integrity": "sha512-bJlen0FcuU/0EMLrdbJ7zOnW6ITZLrZMIarMUVmdKtsGvZna8vxKYaexICWPfZ8qwf9fzNq+UEIZrnSaApt6RA=="
     },
     "whatwg-url": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
-      "integrity": "sha1-lmRU6HZUYuN2RNNib2dCzotwll0=",
+      "version": "11.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-11.0.0.tgz",
+      "integrity": "sha512-RKT8HExMpoYx4igMiVMY83lN6UeITKJlBQ+vR/8ZJ8OCdSiN3RwCq+9gH0+Xzj0+5IrM6i4j/6LuvzbZIQgEcQ==",
       "requires": {
-        "tr46": "~0.0.3",
-        "webidl-conversions": "^3.0.0"
+        "tr46": "^3.0.0",
+        "webidl-conversions": "^7.0.0"
       }
     },
     "widest-line": {
diff --git a/package.json b/package.json
index 761edfcb..236be8af 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
   "dependencies": {
     "axios": "^0.24.0",
     "blakejs": "^1.1.1",
-    "casper-js-sdk": "^2.7.2",
+    "casper-js-sdk": "^2.7.5",
     "cookie-parser": "~1.4.4",
     "debug": "~2.6.9",
     "dotenv": "^10.0.0",
diff --git a/routes/erc20routes.js b/routes/erc20routes.js
index 5f95ede5..642c7a6c 100644
--- a/routes/erc20routes.js
+++ b/routes/erc20routes.js
@@ -3,51 +3,46 @@ var express = require("express");
 var router = express.Router();
 var erc20 = require("../JsClients/ERC20/test/installed.ts");
 
-router
-  .route("/balanceagainstuser")
-  .post(async function (req, res, next) {
-    try {
-
-      if (!req.body.contractHash) {
-            return res.status(400).json({
-              success: false,
-              message: "contractHash not found in request body",
-            });
-      }
-
-      if (!req.body.user) {
-        return res.status(400).json({
-          success: false,
-          message: "user not found in request body",
-        });
-      }
-
-      let balance = await erc20.balanceOf(req.body.contractHash,req.body.user);
-      return res.status(200).json({
-        success: true,
-        message:
-          "Balance has been found against this user against passed token ",
-        balance:balance,
+router.route("/balanceagainstuser").post(async function (req, res, next) {
+  try {
+    if (!req.body.contractHash) {
+      return res.status(400).json({
+        success: false,
+        message: "contractHash not found in request body",
       });
-    } catch (error) {
-      console.log("error (try-catch) : " + error);
-      return res.status(500).json({
+    }
+
+    if (!req.body.user) {
+      return res.status(400).json({
         success: false,
-        err: error,
+        message: "user not found in request body",
       });
     }
-  });
+
+    let balance = await erc20.balanceOf(req.body.contractHash, req.body.user);
+    return res.status(200).json({
+      success: true,
+      message: "Balance has been found against this user against passed token ",
+      balance: balance,
+    });
+  } catch (error) {
+    console.log("error (try-catch) : " + error);
+    return res.status(500).json({
+      success: false,
+      err: error,
+    });
+  }
+});
 
 router
   .route("/allowanceagainstownerandspender")
   .post(async function (req, res, next) {
     try {
-
       if (!req.body.contractHash) {
-            return res.status(400).json({
-              success: false,
-              message: "contractHash not found in request body",
-            });
+        return res.status(400).json({
+          success: false,
+          message: "contractHash not found in request body",
+        });
       }
 
       if (!req.body.owner) {
@@ -64,12 +59,17 @@ router
         });
       }
 
-      let allowance = await erc20.allowance(req.body.contractHash,req.body.onwer,req.body.spender);
+      let allowance = await erc20.allowance(
+        req.body.contractHash,
+        req.body.owner,
+        req.body.spender
+      );
+      console.log("Allowance: ", allowance);
+
       return res.status(200).json({
         success: true,
-        message:
-          "Allowance has been found against this owner and spender ",
-          allowance:allowance,
+        message: "Allowance has been found against this owner and spender",
+        allowance: allowance,
       });
     } catch (error) {
       console.log("error (try-catch) : " + error);