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Error running this package's example app: type '(MethodCall) => Null' is not a subtype of type '((MethodCall) => Future<dynamic>)?' in type castW #73
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Not a good practice, but you can change the below changes manually in the package. |
hello, I am also having the same issue. Hopefully it will be resolved. Thank you |
just change your package code -> bluetooth_print.dart from : to this:
|
This error breaks the package, they should fix this as soon as possible. |
Please fix this simple issue |
still not update ? |
When I execute the example app included in the package, the following error occurs.
════════ Exception caught by widgets library ═══════════════════════════════════
The following _CastError was thrown attaching to the render tree:
type '(MethodCall) => Null' is not a subtype of type '((MethodCall) => Future)?' in type cast
When the exception was thrown, this was the stack
#0 new BluetoothPrint._
package:bluetooth_print/bluetooth_print.dart:26
#1 BluetoothPrint._instance
package:bluetooth_print/bluetooth_print.dart:29
#2 BluetoothPrint._instance (package:bluetooth_print/bluetooth_print.dart)
package:bluetooth_print/bluetooth_print.dart:1
#3 BluetoothPrint.instance
package:bluetooth_print/bluetooth_print.dart:31
#4 new _MyAppState
package:print_ticket/main.dart:17
#5 MyApp.createState
package:print_ticket/main.dart:13
#6 new StatefulElement
package:flutter/…/widgets/framework.dart:4754
#7 StatefulWidget.createElement
package:flutter/…/widgets/framework.dart:737
#8 Element.inflateWidget
package:flutter/…/widgets/framework.dart:3668
#9 Element.updateChild
package:flutter/…/widgets/framework.dart:3425
#10 RenderObjectToWidgetElement._rebuild
package:flutter/…/widgets/binding.dart:1198
#11 RenderObjectToWidgetElement.mount
package:flutter/…/widgets/binding.dart:1167
#12 RenderObjectToWidgetAdapter.attachToRenderTree.
package:flutter/…/widgets/binding.dart:1112
#13 BuildOwner.buildScope
package:flutter/…/widgets/framework.dart:2573
#14 RenderObjectToWidgetAdapter.attachToRenderTree
package:flutter/…/widgets/binding.dart:1111
#15 WidgetsBinding.attachRootWidget
package:flutter/…/widgets/binding.dart:944
#16 WidgetsBinding.scheduleAttachRootWidget.
package:flutter/…/widgets/binding.dart:924
(elided 11 frames from class _RawReceivePortImpl, class _Timer, dart:async, and dart:async-patch)
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