invalid_return_type_for_catch_error does not detect implicit null returns #49215
Description
This tracker is for issues related to Analyzer.
Summary
Some exceptions were thrown due to unknown reasons, we managed to catch them but the stack trace was unable to locate the root cause of the issue.
Invalid argument(s) (onError): The error handler of Future.catchError must return a value of the future's type
#0 _FutureListener.handleError (dart:async/future_impl.dart:181)
#1 Future._propagateToListeners.handleError (dart:async/future_impl.dart:778)
#2 Future._propagateToListeners (dart:async/future_impl.dart:799)
#3 Future._completeError (dart:async/future_impl.dart:574)
#4 _SyncCompleter._completeError (dart:async/future_impl.dart:51)
#5 _Completer.completeError (dart:async/future_impl.dart:23)
#6 Future.any.onError (dart:async/future.dart:616)
#7 _rootRunBinary (dart:async/zone.dart:1450)
#8 _CustomZone.runBinary (dart:async/zone.dart:1342)
#9 _FutureListener.handleError (dart:async/future_impl.dart:162)
#10 Future._propagateToListeners.handleError (dart:async/future_impl.dart:778)
#11 Future._propagateToListeners (dart:async/future_impl.dart:799)
#12 Future._completeError (dart:async/future_impl.dart:574)
#13 Future._chainForeignFuture.<anonymous closure> (dart:async/future_impl.dart:519)
#14 _rootRun (dart:async/zone.dart:1426)
#15 _CustomZone.run (dart:async/zone.dart:1328)
#16 _CustomZone.runGuarded (dart:async/zone.dart:1236)
#17 _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1276)
#18 _microtaskLoop (dart:async/schedule_microtask.dart:40)
#19 _startMicrotaskLoop (dart:async/schedule_microtask.dart:49)
Expect behavior
Reports the precise cause of the error.