The superclass, 'Diagnosticable', has no unnamed constructor that takes no arguments. const DatePickerTheme({ #4
Description
../../Developer/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_datetime_picker-1.2.5/lib/src/datetime_picker_theme.dart:14:9: Error: The superclass, 'Diagnosticable', has no unnamed constructor that takes no arguments.
const DatePickerTheme({
^^^^^^^^^^^^^^^