flutterdartmobile-applicationflutter2.0flutter-exception

The method 'setMockMessageHandler' isn't defined for the class 'BasicMessageChannel<dynamic>'

After running the Flutter project, I get this error. What can I do to solve it?

Error: The method 'setMockMessageHandler' 
isn't defined for the class 'BasicMessageChannel<dynamic>'.

FAILURE: Build failed with an exception.
Solution

  • I had the same problem after update plugin's in AndroidStudio on Mac

    flutter pub upgrade

    did nothing for me, but

    flutter clean
flutter pub upgrade --major-versions

    has solved the problem