on the web published version the upload video is working, but in the test mode is showing the error:
Uncaught (in promise) Error: Looking up a deactivated widget's ancestor is unsafe.At this point the state of the widget's element tree is no longer stable.To safely refer to a widget's ancestor in its dispose() method, save a reference to the ancestor by calling dependOnInheritedWidgetOfExactType() in the widget's didChangeDependencies() method.regards.
Andre