App starts, only a white screen, odd stream error message
It could be a couple of things some stuff you might find helpful:
1.) Try restarting your computer
2.) Some references:
https://github.com/flutter/flutter-intellij
https://plugins.jetbrains.com/plugin/9212-flutter
https://flutter.io/using-ide/
3.)Check your log output flutter doctor -v
4.) Make sure everything is up to date
5.) Check your flutter channel using the flutter channel command maybe try flutter channel master
6.) Try flutter upgrade
7.) Maybe even try installing everything else flutter doctor says is missing.
I am currently trying to learn Flutter using Android devices not iOS