NoSuchMethodError: The method 'toFilePath' was called on null.
Receiver: null
Tried calling: toFilePath()

  | at Object.noSuchMethod | (object_patch.dart:51 )
-- | -- | --
  | at defaultHandler | (handlers.dart:28 )
  | at <asynchronous gap> | (async )
  | at serveDevTools | (server.dart:143 )
  | at <asynchronous gap> | (async )
  | at DevTools.start | (devtools.dart:27 )
  | at <asynchronous gap> | (async )
  | at Dwds.start | (dwds.dart:99 )
  | at <asynchronous gap> | (async )
  | at WebFs.start | (web_fs.dart:287 )
  | at <asynchronous gap> | (async )
  | at ResidentWebRunner.run.<anonymous closure> | (resident_web_runner.dart:184 )
  | at <asynchronous gap> | (async )
  | at asyncGuard.<anonymous closure> | (async_guard.dart:111 )
  | at <asynchronous gap> | (async )
  | at _rootRun | (zone.dart:1124 )
  | at _CustomZone.run | (zone.dart:1021 )
  | at _runZoned | (zone.dart:1516 )
  | at runZoned | (zone.dart:1500 )
  | at asyncGuard | (async_guard.dart:109 )
  | at ResidentWebRunner.run | (resident_web_runner.dart:183 )
  | at <asynchronous gap> | (async )
  | at RunCommand.runCommand | (run.dart:494 )
  | at <asynchronous gap> | (async )
  | at FlutterCommand.verifyThenRunCommand | (flutter_command.dart:557 )
  | at _asyncThenWrapperHelper.<anonymous closure> | (async_patch.dart:71 )
  | at _rootRunUnary | (zone.dart:1132 )
  | at _CustomZone.runUnary | (zone.dart:1029 )
  | at _FutureListener.handleValue | (future_impl.dart:137 )
  | at Future._propagateToListeners.handleValueCallback | (future_impl.dart:678 )
  | at Future._propagateToListeners | (future_impl.dart:707 )
  | at Future._completeWithValue | (future_impl.dart:522 )
  | at _AsyncAwaitCompleter.complete | (async_patch.dart:30 )
  | at _completeOnAsyncReturn | (async_patch.dart:288 )
  | at RunCommand.usageValues | (run.dart )
  | at _asyncThenWrapperHelper.<anonymous closure> | (async_patch.dart:71 )
  | at _rootRunUnary | (zone.dart:1132 )
  | at _CustomZone.runUnary | (zone.dart:1029 )
  | at _FutureListener.handleValue | (future_impl.dart:137 )
  | at Future._propagateToListeners.handleValueCallback | (future_impl.dart:678 )
  | at Future._propagateToListeners | (future_impl.dart:707 )
  | at Future._completeWithValue | (future_impl.dart:522 )
  | at _AsyncAwaitCompleter.complete | (async_patch.dart:30 )
  | at _completeOnAsyncReturn | (async_patch.dart:288 )
  | at IosProject.isSwift | (project.dart )
  | at _asyncThenWrapperHelper.<anonymous closure> | (async_patch.dart:71 )
  | at _rootRunUnary | (zone.dart:1132 )
  | at _CustomZone.runUnary | (zone.dart:1029 )
  | at _FutureListener.handleValue | (future_impl.dart:137 )
  | at Future._propagateToListeners.handleValueCallback | (future_impl.dart:678 )
  | at Future._propagateToListeners | (future_impl.dart:707 )
  | at Future._completeWithValue | (future_impl.dart:522 )
  | at Future._asyncComplete.<anonymous closure> | (future_impl.dart:552 )
  | at _rootRun | (zone.dart:1124 )
  | at _CustomZone.run | (zone.dart:1021 )
  | at _CustomZone.runGuarded | (zone.dart:923 )
  | at _CustomZone.bindCallbackGuarded.<anonymous closure> | (zone.dart:963 )
  | at _microtaskLoop | (schedule_microtask.dart:41 )
  | at _startMicrotaskLoop | (schedule_microtask.dart:50 )
  | at _runPendingImmediateCallback | (isolate_patch.dart:116 )
  | at _RawReceivePortImpl._handleMessage | (isolate_patch.dart:173 )