Example code not Run in flutter

[Naimishimaker]

C:\Users\LENOVO\Downloads\razorpay-flutter-master\android\src\main\java\com\razorpay\razorpay_flutter\UpiTurbo.java:10: error: cannot find symbol
import com.razorpay.GenericPluginCallback;

symbol: class GenericPluginCallback
location: package com.razorpay
C:\Users\LENOVO\Downloads\razorpay-flutter-master\android\src\main\java\com\razorpay\razorpay_flutter\UpiTurbo.java:29: error: cannot find symbol
checkout = new Checkout().upiTurbo(activity);

symbol: method upiTurbo(Activity)
location: class Checkout
C:\Users\LENOVO\Downloads\razorpay-flutter-master\android\src\main\java\com\razorpay\razorpay_flutter\UpiTurbo.java:40: error: cannot find symbol
checkout.upiTurbo.linkNewUpiAccount(customerMobile, color , new GenericPluginCallback(){

symbol: class GenericPluginCallback
location: class UpiTurbo
C:\Users\LENOVO\Downloads\razorpay-flutter-master\android\src\main\java\com\razorpay\razorpay_flutter\UpiTurbo.java:41: error: method does not override or implement a method from a supertype

C:\Users\LENOVO\Downloads\razorpay-flutter-master\android\src\main\java\com\razorpay\razorpay_flutter\UpiTurbo.java:51: error: method does not override or implement a method from a supertype

C:\Users\LENOVO\Downloads\razorpay-flutter-master\android\src\main\java\com\razorpay\razorpay_flutter\UpiTurbo.java:40: error: cannot find symbol
checkout.upiTurbo.linkNewUpiAccount(customerMobile, color , new GenericPluginCallback(){

symbol: variable upiTurbo
location: variable checkout of type Checkout
C:\Users\LENOVO\Downloads\razorpay-flutter-master\android\src\main\java\com\razorpay\razorpay_flutter\UpiTurbo.java:73: error: cannot find symbol
checkout.upiTurbo.manageUpiAccounts(customerMobile, color , new GenericPluginCallback(){

symbol: class GenericPluginCallback
location: class UpiTurbo
C:\Users\LENOVO\Downloads\razorpay-flutter-master\android\src\main\java\com\razorpay\razorpay_flutter\UpiTurbo.java:74: error: method does not override or implement a method from a supertype

C:\Users\LENOVO\Downloads\razorpay-flutter-master\android\src\main\java\com\razorpay\razorpay_flutter\UpiTurbo.java:78: error: method does not override or implement a method from a supertype

C:\Users\LENOVO\Downloads\razorpay-flutter-master\android\src\main\java\com\razorpay\razorpay_flutter\UpiTurbo.java:73: error: cannot find symbol
checkout.upiTurbo.manageUpiAccounts(customerMobile, color , new GenericPluginCallback(){

symbol: variable upiTurbo
location: variable checkout of type Checkout
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
10 errors

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':razorpay_flutter:compileDebugJavaWithJavac'.
  Compilation failed; see the compiler error output for details.

[akilan997ak]

please any one reply this above error

[Shiba-Kar]

Same issue !!