🐛 Null check operator used on a null value When using Combobox about fluent_ui

[FengChendian]

Oh my god... I thought it was just a non-essential component about setting style. It works well after using FluentApp.

Maybe documention should emphasize using it😂
Thanks for help!

[bdlukaa]

Are you using the FluentApp??

[bdlukaa]

Oh my god... I thought it was just a non-essential component about setting style.

Almost every widget provided by this lib uses FluentTheme.of(context). There must be a FluentApp or a FluentTheme above all these widgets.

[ntwarijoshua]

@bdlukaa Am mixing Material with Fluent be able to use some of the components in fluent. i have wrapped them with FluentTheme. but i still get this error ```The following _CastError was thrown building _TooltipOverlay(dirty):
Null check operator used on a null value

This is the code

fluent.FluentTheme(
data: fluent.ThemeData(),
child: fluent.Localizations(
locale: const fluent.Locale.fromSubtags(languageCode: 'en'),
delegates: const [
fluent.DefaultFluentLocalizations.delegate,
GlobalMaterialLocalizations.delegate,
GlobalWidgetsLocalizations.delegate,
],
child: SizedBox(
```

      Any ideas?

[bdlukaa]

@ntwarijoshua I need more info about your issue! What version are you using? Can you share a reproducible snippet?