[Solved] Unhandled Exception: Looking up a deactivated widget's ancestor is unsafe. At this point the state of the widget's element tree is no longer stable.

Error

[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: Looking up a deactivated widget's ancestor is unsafe. At this point the state of the widget's element tree is no longer stable. To safely refer to a widget's ancestor in its dispose() method, save a reference to the ancestor by calling dependOnInheritedWidgetOfExactType() in the widget's didChangeDependencies() method. #0 Element._debugCheckStateIsActiveForAncestorLookup. (package:flutter/src/widgets/framework.dart:4347:9) #1 Element._debugCheckStateIsActiveForAncestorLookup (package:flutter/src/widgets/framework.dart:4361:6) #2 Element.getElementForInheritedWidgetOfExactType (package:flutter/src/widgets/framework.dart:4396:12) #3 Provider._inheritedElementOf (package:provider/src/provider.dart:339:38) #4 Provider.of (package:provider/src/provider.dart:293:30) #5 ReadContext.read (package:provider/src/provider.dart:649:21) #6 OrderMonitor._onData (package:robot_one/public/background/OrderMonitor.dart:20:18) #7 _RootZone.runUnaryGuarded (dart:async/zone.dart:1594:10) #8 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:339:11) #9 _DelayedData.perform (dart:async/stream_impl.dart:515:14) #10 _PendingEvents.handleNext (dart:async/stream_impl.dart:620:11) #11 _PendingEvents.schedule. (dart:async/stream_impl.dart:591:7) #12 _microtaskLoop (dart:async/schedule_microtask.dart:40:21) #13 _startMicrotaskLoop (dart:async/schedule_microtask.dart:49:5)

Solution

I am trying and will update when this error was solved.

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