MissingPluginException(No implementation found for method showCallkitIncoming on channel flutter_callkit_incoming)

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After installing the dependency
flutter_callkit_incoming: ^2.0.4+2,

i started having issue anytime i call :
await FlutterCallkitIncoming.showCallkitIncoming(params);

I downgraded to 2.0.4 and still having same issue. The error log below:

E/flutter ( 5486): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: MissingPluginException(No implementation found for method showCallkitIncoming on channel flutter_callkit_incoming)
E/flutter ( 5486): #0 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:332:7)
E/flutter ( 5486):
E/flutter ( 5486): #1 FlutterCallkitIncoming.showCallkitIncoming (package:flutter_callkit_incoming/flutter_callkit_incoming.dart:43:5)
E/flutter ( 5486):
E/flutter ( 5486): #2 SipControllerServiceX.showIncomingCall (package:tok9ja_app/data/services/sip_webrtc/sip_controller_service_x.dart:539:5)
E/flutter ( 5486):