The return type 'Null' isn't a 'Widget', as required by the closure's context.

Arokip / flutter_diagram_editor

Fllutter diagram editor library

MIT License

116 stars 38 forks source link

The return type 'Null' isn't a 'Widget', as required by the closure's context. #46

Closed gjcarver closed 6 months ago

gjcarver commented 10 months ago

error: The return type 'Null' isn't a 'Widget', as required by the closure's context. (return_of_invalid_type_from_closure at ... lib\simple_diagram_editor\policy\canvas_widgets_policy.dart:27)

gjcarver commented 6 months ago

This works: https://github.com/Arokip/fdl_demo_app/tree/null-safety