`get_runtime_errors` returns no errors for a broken Flutter app

[athomas]

I tried to get Gemini CLI to fix a broken app (red widgets with error messages, corresponding log output from flutter run) but the MCP server fails to provide this info to Gemini:

Gemini interaction:

 ✓  get_runtime_errors (dart MCP Server) {}                                                                                                      │
 │                                                                                                                                                 │
 │    No runtime errors found.     

The log contains errors and stacktraces:

══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
The following ProviderNotFoundException was thrown building Consumer2<QueryResults,
TabController>(dirty, dependencies: [_InheritedProviderScope<QueryResults?>]):
Error: Could not find the correct Provider<TabController> above this Consumer2<QueryResults,
TabController> Widget

Note: this is a flutter web app running in chrome from a debug session started in VSCode.