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material_ui 1.3.0 & cupertino_ui 1.1.0 on Flutter 3.44 Error: Undefined name 'awaitNotRequired'. #192839
Description
The issue happens when I'm using Flutter 3.44.9 (or maybe any Flutter version <3.47).
material_ui 1.3.0 changelog have this:
Adds @awaitNotRequired annotations to asynchronous functions that do not need to be awaited.
But that @awaitNotRequired is added since Flutter 3.47.0:
Add @awaitNotRequired annotation to flutter sdk by @victorsanni in 181513
However, material_ui 1.3.0 doesn't bump Flutter requirements
I expect to have something like this in the changelog of material_ui 1.3.0:
Updates minimum supported SDK version to Flutter 3.47
cupertino_ui 1.1.0 has the very same issue.
Adds awaitNotRequired annotation to showCupertinoModalPopup and showCupertinoDialog.
PS: The issue template for 1st-party packages issue don't have material_ui or cupertino_ui so I use a blank template.
Activity
[-]material_ui 1.3.0 & cupertino_ui 1.1.0 Error: Undefined name 'awaitNotRequired'.[/-][+]material_ui 1.3.0 & cupertino_ui 1.1.0 on Flutter 3.44 Error: Undefined name 'awaitNotRequired'.[/+]saurabh-mirajkar commentedon Sep 16, 2026
@simonpham Thanks for the report. Could you please provide a minimal reproducible sample that produces the error, along with
flutter doctor -vfrom that project? Thanks!simonpham commentedon Sep 16, 2026
you can just clone material_ui example and run it with Flutter 3.44.9
saurabh-mirajkar commentedon Sep 16, 2026
@simonpham Thanks for the clarification. I was able to reproduce the issue using the
material_ui1.3.0 example on Flutter 3.44.9, where the build fails withUndefined name 'awaitNotRequired'. The same example builds successfully on Flutter 3.47.4.The package declares Flutter
>=3.44.0, so this is actionable as a package compatibility issue. Routing to the team for further evaluation.wafir645fcqs12 commentedon Sep 16, 2026
WieFel commentedon Sep 17, 2026
I have the same issue.
I have an app running Flutter
3.44.2, and when I install a package which introducesmaterial_uias transitive dependency (e.g. https://pub.dev/packages/shimmer version4.0.0, usingflutter pub add <package>), I get the same error mentioned above:I would expect that, when running
flutter pub add <package>and installing any package, Flutter should be able to detect the last compatible package version, which doesn't usematerial_uiyet. But that is not the case right now.[material_ui, cupertino_ui] Bump Flutter version from to 3.47 (flutte…
github-actions commentedon Oct 5, 2026
This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of
flutter doctor -vand a minimal reproduction of the issue.