Get error while sign Multi Sig PSBT use Unisat Wallet

[rustyneuron01]

import * as bitcoin from "bitcoinjs-lib";
import * as ecc from "tiny-secp256k1";
import { Taptree } from "bitcoinjs-lib/src/types";
import { tapleafHash } from "bitcoinjs-lib/src/payments/bip341";

function makeUnspendableInternalKey(provableNonce?: Buffer): Buffer {
  // This is the generator point of secp256k1. Private key is known (equal to 1)
  const G = Buffer.from(
    "0479be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8",
    "hex"
  );
  // This is the hash of the uncompressed generator point.
  // It is also a valid X value on the curve, but we don't know what the private key is.
  // Since we know this X value (a fake "public key") is made from a hash of a well known value,
  // We can prove that the internalKey is unspendable.
  const Hx = bitcoin.crypto.sha256(G);

  if (provableNonce) {
    if (provableNonce.length !== 32) {
      throw new Error(
        "provableNonce must be a 32 byte random value shared between script holders"
      );
    }
    // Using a shared random value, we create an unspendable internalKey
    // P = H + int(hash_taptweak(provableNonce))*G
    // Since we don't know H's private key (see explanation above), we can't know P's private key
    const tapHash = bitcoin.crypto.taggedHash("TapTweak", provableNonce);
    const ret = ecc.xOnlyPointAddTweak(Hx, tapHash);
    if (!ret) {
      throw new Error(
        "provableNonce produced an invalid key when tweaking the G hash"
      );
    }
    return Buffer.from(ret.xOnlyPubkey);
  } else {
    // The downside to using no shared provable nonce is that anyone viewing a spend
    // on the blockchain can KNOW that you CAN'T use key spend.
    // Most people would be ok with this being public, but some wallets (exchanges etc)
    // might not want ANY details about how their wallet works public.
    return Hx;
  }
}

export class TaprootMultisigWallet {
  private leafScriptCache: Buffer | null = null;
  private internalPubkeyCache: Buffer | null = null;
  private paymentCache: bitcoin.Payment | null = null;
  private readonly publicKeyCache: Buffer;
  network: bitcoin.Network;

  constructor(
    /**
     * A list of all the (x-only) pubkeys in the multisig
     */
    private readonly pubkeys: Buffer[],
    /**
     * The number of required signatures
     */
    private readonly requiredSigs: number,
    /**
     * The private key you hold.
     */
    private readonly privateKey: Buffer,
    /**
     * leaf version (0xc0 currently)
     */
    readonly leafVersion: number,
    /**
     * Optional shared nonce. This should be used in wallets where
     * the fact that key-spend is unspendable should not be public,
     * BUT each signer must verify that it is unspendable to be safe.
     */
    private readonly sharedNonce?: Buffer
  ) {
    this.network = bitcoin.networks.bitcoin;

    const pubkey = ecc.pointFromScalar(privateKey);

    if (!pubkey) throw "Invalid Keys";

    this.publicKeyCache = Buffer.from(pubkey);

    // IMPORTANT: Make sure the pubkeys are sorted (To prevent ordering issues between wallet signers)
    this.pubkeys.sort((a, b) => a.compare(b));
  }

  setNetwork(network: bitcoin.Network): this {
    this.network = network;
    return this;
  }

  // Required for Signer interface.
  // Prevent setting by using a getter.
  get publicKey(): Buffer {
    return this.publicKeyCache;
  }

  /**
   * Lazily build the leafScript. A 2 of 3 would look like:
   * key1 OP_CHECKSIG key2 OP_CHECKSIGADD key3 OP_CHECKSIGADD OP_2 OP_GREATERTHANOREQUAL
   */
  get leafScript(): Buffer {
    if (this.leafScriptCache) {
      return this.leafScriptCache;
    }
    const ops = [];
    this.pubkeys.forEach((pubkey) => {
      if (ops.length === 0) {
        ops.push(pubkey);
        ops.push(bitcoin.opcodes.OP_CHECKSIG);
      } else {
        ops.push(pubkey);
        ops.push(bitcoin.opcodes.OP_CHECKSIGADD);
      }
    });
    if (this.requiredSigs > 16) {
      ops.push(bitcoin.script.number.encode(this.requiredSigs));
    } else {
      ops.push(bitcoin.opcodes.OP_1 - 1 + this.requiredSigs);
    }
    ops.push(bitcoin.opcodes.OP_GREATERTHANOREQUAL);

    this.leafScriptCache = bitcoin.script.compile(ops);
    return this.leafScriptCache;
  }

  get internalPubkey(): Buffer {
    if (this.internalPubkeyCache) {
      return this.internalPubkeyCache;
    }
    // See the helper function for explanation
    this.internalPubkeyCache = makeUnspendableInternalKey(this.sharedNonce);
    return this.internalPubkeyCache;
  }

  get scriptTree(): Taptree {
    // If more complicated, maybe it should be cached.
    // (ie. if other scripts are created only to create the tree
    // and will only be stored in the tree.)
    return {
      output: this.leafScript,
    };
  }

  get redeem(): {
    output: Buffer;
    redeemVersion: number;
  } {
    return {
      output: this.leafScript,
      redeemVersion: this.leafVersion,
    };
  }

  private get payment(): bitcoin.Payment {
    if (this.paymentCache) {
      return this.paymentCache;
    }
    this.paymentCache = bitcoin.payments.p2tr({
      internalPubkey: this.internalPubkey,
      scriptTree: this.scriptTree,
      redeem: this.redeem,
      network: this.network,
    });
    return this.paymentCache;
  }

  get output(): Buffer {
    return this.payment.output!;
  }

  get address(): string {
    return this.payment.address!;
  }

  get controlBlock(): Buffer {
    const witness = this.payment.witness!;
    return witness[witness.length - 1];
  }

  verifyInputScript(psbt: bitcoin.Psbt, index: number) {
    if (index >= psbt.data.inputs.length)
      throw new Error("Invalid input index");
    const input = psbt.data.inputs[index];
    if (!input.tapLeafScript) throw new Error("Input has no tapLeafScripts");
    const hasMatch =
      input.tapLeafScript.length === 1 &&
      input.tapLeafScript[0].leafVersion === this.leafVersion &&
      input.tapLeafScript[0].script.equals(this.leafScript) &&
      input.tapLeafScript[0].controlBlock.equals(this.controlBlock);
    if (!hasMatch)
      throw new Error(
        "No matching leafScript, or extra leaf script. Refusing to sign."
      );
  }

  addInput(
    psbt: bitcoin.Psbt,
    hash: string | Buffer,
    index: number,
    value: number
  ) {
    psbt.addInput({
      hash,
      index,
      witnessUtxo: { value, script: this.output },
    });
    psbt.updateInput(psbt.inputCount - 1, {
      tapLeafScript: [
        {
          leafVersion: this.leafVersion,
          script: this.leafScript,
          controlBlock: this.controlBlock,
        },
      ],
    });
  }

  addDummySigs(psbt: bitcoin.Psbt) {
    const leafHash = tapleafHash({
      output: this.leafScript,
      version: this.leafVersion,
    });
    for (const input of psbt.data.inputs) {
      if (!input.tapScriptSig) continue;
      const signedPubkeys = input.tapScriptSig
        .filter((ts) => ts.leafHash.equals(leafHash))
        .map((ts) => ts.pubkey);
      for (const pubkey of this.pubkeys) {
        if (signedPubkeys.some((sPub) => sPub.equals(pubkey))) continue;
        // Before finalizing, every key that did not sign must have an empty signature
        // in place where their signature would be.
        // In order to do this currently we need to construct a dummy signature manually.
        input.tapScriptSig.push({
          // This can be reused for each dummy signature
          leafHash,
          // This is the pubkey that didn't sign
          pubkey,
          // This must be an empty Buffer.
          signature: Buffer.from([]),
        });
      }
    }
  }

  // required for Signer interface
  sign(hash: Buffer, _lowR?: boolean): Buffer {
    return Buffer.from(ecc.sign(hash, this.privateKey));
  }

  // required for Signer interface
  signSchnorr(hash: Buffer): Buffer {
    return Buffer.from(ecc.signSchnorr(hash, this.privateKey));
  }
}

const testTaproot = async () => {
  const sigWalletPubkey1 =
    "026272fe4cf7746c9c3de3d48afc5f27fe4ba052fc8f72913a6020fa970f7f5823";
  const sigWalletAddress1 =
    "tb1pgda5khhwqlc7jmdzn4plca3pa4m7jg38zcspj0mmuyk8hnj5pphskers72";
  const sigWalletPubkey2 =
    "02c032c56d3af8899a15915d52c706c4659bc5ddb88ddf965bb334641ff9498d58";
  const sigWalletAddress2 =
    "tb1p2vsa0qxsn96sulauasfgyyccfjdwp2rzg8h2ejpxcdauulltczuqw02jmj";
  const sigWalletPubkey3 =
    "02df4a77af5c93acb96b9749a84f4e61e1e259304adec248891d66247faddd8c3e";
  const sigWalletAddress3 =
    "tb1pa8h7v54gqy9dww7y248h4j48sltcqjkasz0mk28steqf4ln02geq8s2u42";

  const leafPubkeys: Buffer[] = [
    toXOnly(Buffer.from(sigWalletPubkey1, "hex")),
    toXOnly(Buffer.from(sigWalletPubkey2, "hex")),
    toXOnly(Buffer.from(sigWalletPubkey3, "hex")),
  ];

  const leafKey = bip32.fromSeed(rng(64), bitcoin.networks.testnet);

  const multiSigWallet = new TaprootMultisigWallet(
    leafPubkeys,
    2,
    leafKey.privateKey!,
    LEAF_VERSION_TAPSCRIPT
  ).setNetwork(bitcoin.networks.testnet);

  console.log(multiSigWallet.address);

  const psbt = new bitcoin.Psbt({ network: bitcoin.networks.testnet });

  multiSigWallet.addInput(
    psbt,
    "a878fc53bd543212f1dde7618a4fa05e9c35d71ef88633b4c2c2cc7a5eb14233",
    0,
    100000
  );
  psbt.addOutput({
    value: 50000,
    address: "tb1psh9f9dk4fuhclvlvu929gqrftzpwpxlrcl208k0k3geltnrgh4dscpzwng",
  });

  console.log("psbt", psbt.toHex());
};

I used above code for generate MultiSig Wallet

But after get PSBT, I can not sign use Unisat Wallet.
I tried to sign PSBT like below

unisat.signPsbt("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", {
    autoFinalized:false,
        toSignInputs:[
          {
            index: 0,
            address: "tb1p2vsa0qxsn96sulauasfgyyccfjdwp2rzg8h2ejpxcdauulltczuqw02jmj",
          }
        ]
})

When I try to use above command, I get this error
"Can not sign for input #0 with the key 025321d780d099750e7fbcec128213184c9ae0a86241eeacc826c37bce7febc0b8"

Hope to get help about taproot multi-sig wallet