The following error is thrown when I try to open the devtools on the example app.
══╡ EXCEPTION CAUGHT BY FLUTTER FRAMEWORK ╞═════════════════════════════════════════════════════════
The following _TypeError was thrown during a service extension callback for
"ext.flutter.inspector.getRootWidgetSummaryTree":
type 'Null' is not a subtype of type 'String' of 'function result'
When the exception was thrown, this was the stack:
#0 _Location.file (package:flutter/src/widgets/widget_inspector.dart)
#1 _Location.toJsonMap (package:flutter/src/widgets/widget_inspector.dart:2842:15)
#2 _Location.toJsonMap.<anonymous closure> (package:flutter/src/widgets/widget_inspector.dart:2851:44)
#3 MappedListIterable.elementAt (dart:_internal/iterable.dart:411:31)
#4 ListIterator.moveNext (dart:_internal/iterable.dart:340:26)
#5 new _GrowableList._ofEfficientLengthIterable (dart:core-patch/growable_array.dart:188:27)
#6 new _GrowableList.of (dart:core-patch/growable_array.dart:150:28)
#7 new List.of (dart:core-patch/array_patch.dart:50:28)
#8 ListIterable.toList (dart:_internal/iterable.dart:211:44)
#9 _Location.toJsonMap (package:flutter/src/widgets/widget_inspector.dart:2851:57)
#10 InspectorSerializationDelegate.additionalNodeProperties (package:flutter/src/widgets/widget_inspector.dart:3166:53)
#11 DiagnosticsNode.toJsonMap.<anonymous closure> (package:flutter/src/foundation/diagnostics.dart:1592:21)
#12 DiagnosticsNode.toJsonMap (package:flutter/src/foundation/diagnostics.dart:1607:6)
#13 _ElementDiagnosticableTreeNode.toJsonMap (package:flutter/src/widgets/framework.dart:4219:45)
#14 WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1499:18)
#15 WidgetInspectorService._getRootWidgetSummaryTree (package:flutter/src/widgets/widget_inspector.dart:1683:12)
#16 WidgetInspectorService._registerObjectGroupServiceExtension.<anonymous closure>
(package:flutter/src/widgets/widget_inspector.dart:793:58)
#17 WidgetInspectorService._registerObjectGroupServiceExtension.<anonymous closure>
(package:flutter/src/widgets/widget_inspector.dart:792:17)
#18 BindingBase.registerServiceExtension.<anonymous closure> (package:flutter/src/foundation/binding.dart:597:32)
<asynchronous suspension>
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The following error is thrown when I try to open the devtools on the example app.