Looks like a change in Dart now requires sdk v2.8.0 in order to suppress an error in the AnimationController on the vsync parameter.
Using the >2.7.0 sdk results in an error: The named parameter 'vsync' isn't defined.
Ref: https://github.com/flutter/flutter/issues/62752#issuecomment-667744745
Looks like a change in Dart now requires sdk v2.8.0 in order to suppress an error in the AnimationController on the vsync parameter. Using the >2.7.0 sdk results in an error: The named parameter 'vsync' isn't defined. Ref: https://github.com/flutter/flutter/issues/62752#issuecomment-667744745