I/flutter (28786): The following assertion was thrown attaching to the render tree:
I/flutter (28786): 'package:flutter/src/material/slider_theme.dart': Failed assertion: line 233 pos 16: 'trackHeight !=
I/flutter (28786): null': is not true.
I/flutter (28786):
I/flutter (28786): Either the assertion indicates an error in the framework itself, or we should provide substantially
I/flutter (28786): The following assertion was thrown attaching to the render tree: I/flutter (28786): 'package:flutter/src/material/slider_theme.dart': Failed assertion: line 233 pos 16: 'trackHeight != I/flutter (28786): null': is not true. I/flutter (28786): I/flutter (28786): Either the assertion indicates an error in the framework itself, or we should provide substantially