Flutter - Connectycube_flutter_callkit not working in the background or terminated

i'm using connectycube for receiving calls but when i accept call while is in the background like the image below it navigates me the home page but not the call here is the code

void videocaller( var friendName){
  Uuid uuid = Uuid();
  CallEvent callEvent = CallEvent(sessionId: uuid.v4() + "1", callType: 1, callerId: 0, 
  callerName: friendName, opponentsIds:{1234});

  Future<void> _onCallAccepted(CallEvent callEvent) async {
    _joinMeetingVideo(friendName);
   }

   Future<void> _onCallRejected(CallEvent callEvent) async {

   }
   Future onCallRejectedWhenTerminated(CallEvent? callEvent) async {

     }
   Future onCallAcceptedWhenTerminated(CallEvent? callEvent) async {
     _joinMeetingVideo(friendName);
   }

 ConnectycubeFlutterCallKit.onCallRejectedWhenTerminated = onCallRejectedWhenTerminated;
 ConnectycubeFlutterCallKit.onCallAcceptedWhenTerminated = onCallAcceptedWhenTerminated;
  ConnectycubeFlutterCallKit.instance.init(
    onCallAccepted: _onCallAccepted,
    onCallRejected: _onCallRejected,
  );
 ConnectycubeFlutterCallKit.showCallNotification(callEvent);
 ConnectycubeFlutterCallKit.setOnLockScreenVisibility(isVisible: true);

 }

i tried it with getx to navigate to jitsi call but it does not work

actually the problem is that jitsi function [_joinMeetingVideo(friendName);] is not a page where i can navigate to it's a function so it can't be executed enless the app is open this why it opens the home page of the app but not the video call itself but unfortunately i could't find a solution for this issue. any ideas ??

_joinMeetingVideo() is not a top-level function