Run time error on Android

[paraslamsong]

Error Log: [ERROR:flutter/lib/ui/ui_dart_state.cc(209)] Unhandled Exception: PlatformException(error, Unable to find explicit activity class {com.package/com.khalti.checkout.CheckOutActivity}; have you declared this activity in your AndroidManifest.xml?, null, android.content.ActivityNotFoundException: Unable to find explicit activity class {com.package/com.khalti.checkout.CheckOutActivity}; have you declared this activity in your AndroidManifest.xml?

Description:
App build smoothly in android but when calling Package api it crashed with above log

Android Version: 10
plugin ver: ^1.1.0+1

[paraslamsong]

@awazgyawali
Please view this issue