getting errors while run the app on local

[Mahesh-Langote]

The method 'FlatButton' isn't defined for the type 'SimpleRoundIconButton'.
Try correcting the name to the name of an existing method, or defining a method named 'FlatButton'.

lib/login_screen_1.dart:148:30: Error: The method 'FlatButton' isn't
defined for the class 'LoginScreen1'.

• 'LoginScreen1' is from
  'package:flutter_login_screens/login_screen_1.dart'
  ('lib/login_screen_1.dart').
  Try correcting the name to the name of an existing method, or defining a
  method named 'FlatButton'.
  child: FlatButton(
  ^^^^^^^^^^
  lib/login_screen_1.dart:168:40: Error: The method 'FlatButton' isn't
  defined for the class 'LoginScreen1'.
• 'LoginScreen1' is from
  'package:flutter_login_screens/login_screen_1.dart'
  ('lib/login_screen_1.dart').
  Try correcting the name to the name of an existing method, or defining a
  method named 'FlatButton'.
  child: FlatButton(
  ^^^^^^^^^^
  lib/login_screen_1.dart:194:30: Error: The method 'FlatButton' isn't
  defined for the class 'LoginScreen1'.
• 'LoginScreen1' is from
  'package:flutter_login_screens/login_screen_1.dart'
  ('lib/login_screen_1.dart').
  Try correcting the name to the name of an existing method, or defining a
  method named 'FlatButton'.
  child: FlatButton(
  ^^^^^^^^^^
  lib/login_screen_1.dart:214:40: Error: The method 'FlatButton' isn't
  defined for the class 'LoginScreen1'.
• 'LoginScreen1' is from
  'package:flutter_login_screens/login_screen_1.dart'
  ('lib/login_screen_1.dart').
  Try correcting the name to the name of an existing method, or defining a
  method named 'FlatButton'.
  child: FlatButton(
  ^^^^^^^^^^
  lib/login_screen_1.dart:240:30: Error: The method 'FlatButton' isn't
  defined for the class 'LoginScreen1'.
• 'LoginScreen1' is from
  'package:flutter_login_screens/login_screen_1.dart'
  ('lib/login_screen_1.dart').
  Try correcting the name to the name of an existing method, or defining a
  method named 'FlatButton'.
  child: FlatButton(
  ^^^^^^^^^^
  Waiting for connection from debug service on Chrome... 30.5s
  Failed to compile application.
  PS C:\Mahesh-Space\FlutterScreens>

[Arghya-1121]

#60 (comment) check this pull request!