Error: Flutter version 1.20.0

[bytestreme]

I have build errors on Flutter (Channel stable, 1.20.0)

Error: Type 'DiagnosticableMixin' not found.
Error: Type 'DiagnosticableMixin' not found
Error: The type 'DiagnosticableMixin' can't be mixed in
Error: Superclass has no method named 'debugFillProperties'
Error: Superclass has no method named 'debugFillProperties'

Those errors come from flutter_svg: ^0.17.4 when used with this version of Flutter

I am using the following to fix this:

dependency_overrides: flutter_svg: 0.18.0

Solution:

Upgrade flag package's flutter_svg dependency version to 0.18.0

[LunaGao]

@bytestreme Which version of flag_flutter are you using ?

[bytestreme]

@bytestreme Which version of flag_flutter are you using ?

3.0.4 version

[LunaGao]

Thanks @simonpham 's PR. Merged into stable branch.