Using the plugin in add-to-app fails with an exception

[olivierwgu]

I have created my own plugin that implements our OIDC flow and uses flutter_web_auth_2 plugin to present the webview.
My plugin provides a button widget (login) that is used to configure and start the OIDC flow. When I try to start the OIDC flow, I am getting an exception thrown by your plugin as it cannot find the root view controller.
It seems the root view controller does not get propagated down to your module. Not sure how to fix this.
The exception is:
ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: PlatformException(ACQUIRE_ROOT_VIEW_CONTROLLER_FAILED, Failed to acquire root view controller, null, null)
#0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:652:7)
#1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:370:18)

#2 FlutterWebAuth2MethodChannel.authenticate (package:flutter_web_auth_2_platform_interface/method_channel/method_channel.dart:14:7)

#3 AuthenticationRepositoryImpl.authenticateUserOIDC (package:core/data/repositories/authentication_repository_impl.dart:108:20)

[ThexXTURBOXx]

Which version of the plugin are you using? The 4.x release or the 5.0.0 alpha?

[olivierwgu]

flutter_web_auth_2: ^4.1.0
It throws the exception when I try to go through a Flutter button exposed via the FlutterViewController

`
func makeUIViewController(context: Context) -> FlutterViewController {
// Create a Flutter view using the shared engine
let flutterViewController = FlutterViewController(engine: flutterDependencies.flutterEngine, nibName: nil, bundle: nil)

    return flutterViewController

}
`

The FlutterviewController loads my Flutter login button which then connects to my use case, repo.

The problem may lay in a plugin that is integrated as a ViewController, calling another plugin that requires the root view controller?