React with Fluent UI Tab Error:

[ThomasPe]

Describe the bug
A newly created Tab => React with Fluent UI => TypeScript results in the following error when running the app without any other changes:

WARNING in ./node_modules/@fluentui/react-window-provider/lib/WindowProvider.js
Module Warning (from ./node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from 'C:\Code\temp\fluenttest\node_modules\@fluentui\react-window-provider\src\WindowProvider.tsx' file: Error: ENOENT: no such file or directory, open 'C:\Code\temp\fluenttest\node_modules\@fluentui\react-window-provider\src\WindowProvider.tsx'

WARNING in ./node_modules/@fluentui/react-window-provider/lib/index.js
Module Warning (from ./node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from 'C:\Code\temp\fluenttest\node_modules\@fluentui\react-window-provider\src\index.ts' file: Error: ENOENT: no such file or directory, open 'C:\Code\temp\fluenttest\node_modules\@fluentui\react-window-provider\src\index.ts'

WARNING in ./node_modules/@fluentui/react-window-provider/lib/version.js
Module Warning (from ./node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from 'C:\Code\temp\fluenttest\node_modules\@fluentui\react-window-provider\src\version.ts' file: Error: ENOENT: no such file or directory, open 'C:\Code\temp\fluenttest\node_modules\@fluentui\react-window-provider\src\version.ts'

I've tried it twice with the same result. Also on a different PC.

VS Code Extension Information (please complete the following information):

• OS: Windows
• Version v5.8.1

CLI Information (please complete the following information):

• OS: Windows
• Version 3.0.2

[Yimin-Jin]

We apologize for the inconvenience caused by this warning log. Please note that it is a warning-level log and does not prevent the app from starting. We are actively working on resolving this issue and expect to release a fix in the upcoming pre-release.

[vsonkar-csod]

Im facing the same error and it's not loading the app for me!

[github-actions]

The issue is milestoned with sprint milestone CY24Q3-2Wk11 (Aug 25 - Sep 07) and a work item created: https://msazure.visualstudio.com/9660fff2-2363-48b0-9e15-64df2283e932/_workitems/edit/29244323

[Yimin-Jin]

Im facing the same error and it's not loading the app for me!

Could you please provide the error logs? From our side, the warning logs you mentioned do not seem to prevent the Teams app from starting.

[Yimin-Jin]

We have fixed this bug and will release it in the next prerelease.
https://github.com/OfficeDev/teams-toolkit/pull/12332

[microsoft-github-policy-service]

This issue has been automatically marked as stale because it has been marked as requiring author feedback but has not had any activity for 7 days. As it is labeled with bug, it will be manually handled