Error on flutter run...

[AngeLinuX99]

Hi,

I got this error when i launch a flutter run command, any help to solve it ?? Thanks !

Running "flutter pub get" in flutter_thingsboard_app... 3,9s Launching lib\main.dart on M2101K9AG in debug mode... lib/modules/dashboard/dashboard.dart:384:87: Warning: Operand of null-aware operation '!' has type 'WidgetsBinding' which excludes null.

• 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('../flutter/packages/flutter/lib/src/widgets/binding.dart'). var data = MediaQueryData.fromWindow(WidgetsBinding.instance!.window); ^ lib/core/auth/login/login_page.dart:188:71: Warning: Operand of null-aware operation '!' has type 'WidgetsBinding' which excludes null.
• 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('../flutter/packages/flutter/lib/src/widgets/binding.dart'). var data = MediaQueryData.fromWindow(WidgetsBinding.instance!.window); ^ lib/core/auth/web/tb_web_auth.dart:27:20: Warning: Operand of null-aware operation '?.' has type 'WidgetsBinding' which excludes null.
• 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('../flutter/packages/flutter/lib/src/widgets/binding.dart'). WidgetsBinding.instance?.removeObserver(_resumedObserver); // safety measure so we never add this observer twice ^ lib/core/auth/web/tb_web_auth.dart:28:20: Warning: Operand of null-aware operation '?.' has type 'WidgetsBinding' which excludes null.
• 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('../flutter/packages/flutter/lib/src/widgets/binding.dart'). WidgetsBinding.instance?.addObserver(_resumedObserver); ^ lib/core/auth/web/tb_web_auth.dart:38:20: Warning: Operand of null-aware operation '?.' has type 'WidgetsBinding' which excludes null.
• 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('../flutter/packages/flutter/lib/src/widgets/binding.dart'). WidgetsBinding.instance?.removeObserver(_resumedObserver); ^ ../../AppData/Local/Pub/Cache/hosted/pub.dartlang.org/qr_code_scanner-0.6.1/lib/src/qr_code_scanner.dart:68:20: Warning: Operand of null-aware operation '!' has type 'WidgetsBinding' which excludes null.
• 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('../flutter/packages/flutter/lib/src/widgets/binding.dart'). WidgetsBinding.instance!.addObserver(_observer); ^ ../../AppData/Local/Pub/Cache/hosted/pub.dartlang.org/qr_code_scanner-0.6.1/lib/src/qr_code_scanner.dart:86:20: Warning: Operand of null-aware operation '!' has type 'WidgetsBinding' which excludes null.
• 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('../flutter/packages/flutter/lib/src/widgets/binding.dart'). WidgetsBinding.instance!.removeObserver(_observer); ^ ../../AppData/Local/Pub/Cache/hosted/pub.dartlang.org/infinite_scroll_pagination-3.1.0/lib/src/ui/paged_sliver_builder.dart:257:24: Warning: Operand of null-aware operation '?.' has type 'WidgetsBinding' which excludes null.
• 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('../flutter/packages/flutter/lib/src/widgets/binding.dart'). WidgetsBinding.instance?.addPostFrameCallback((_) { ^ Note: C:\Users\anglm\AppData\Local\Pub\Cache\hosted\pub.dartlang.org\device_info-2.0.3\android\src\main\java\io\flutter\plugins\deviceinfo\DeviceInfoPlugin.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details. Note: Some input files use or override a deprecated API. Note: Recompile with -Xlint:deprecation for details. Note: Some input files use unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details. e: C:\Users\anglm\AppData\Local\Pub\Cache\hosted\pub.dartlang.org\qr_code_scanner-0.6.1\android\src\main\kotlin\net\touchcapture\qr\flutterqr\QRView.kt: (23, 1): Class 'QRView' is not abstract and does not implement abstract member public abstract fun onRequestPermissionsResult(p0: Int, p1: Array<(out) String!>, p2: IntArray): Boolean defined in io.flutter.plugin.common.PluginRegistry.RequestPermissionsResultListener e: C:\Users\anglm\AppData\Local\Pub\Cache\hosted\pub.dartlang.org\qr_code_scanner-0.6.1\android\src\main\kotlin\net\touchcapture\qr\flutterqr\QRView.kt: (217, 26): Null can not be a value of a non-null type String e: C:\Users\anglm\AppData\Local\Pub\Cache\hosted\pub.dartlang.org\qr_code_scanner-0.6.1\android\src\main\kotlin\net\touchcapture\qr\flutterqr\QRView.kt: (248, 26): Null can not be a value of a non-null type String e: C:\Users\anglm\AppData\Local\Pub\Cache\hosted\pub.dartlang.org\qr_code_scanner-0.6.1\android\src\main\kotlin\net\touchcapture\qr\flutterqr\QRView.kt: (301, 5): 'onRequestPermissionsResult' overrides nothing e: C:\Users\anglm\AppData\Local\Pub\Cache\hosted\pub.dartlang.org\qr_code_scanner-0.6.1\android\src\main\kotlin\net\touchcapture\qr\flutterqr\QRViewFactory.kt: (10, 1): Class 'QRViewFactory' is not abstract and does not implement abstract base class member public abstract fun create(p0: Context?, p1: Int, p2: Any?): PlatformView defined in io.flutter.plugin.platform.PlatformViewFactory e: C:\Users\anglm\AppData\Local\Pub\Cache\hosted\pub.dartlang.org\qr_code_scanner-0.6.1\android\src\main\kotlin\net\touchcapture\qr\flutterqr\QRViewFactory.kt: (13, 5): 'create' overrides nothing

FAILURE: Build failed with an exception.

• What went wrong: Execution failed for task ':qr_code_scanner:compileDebugKotlin'.

  Compilation error. See log for more details

• Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 1m 13s Running Gradle task 'assembleDebug'... 75,0s Exception: Gradle task assembleDebug failed with exit code 1`

[ybeshkarov]

Hello @AngeLinuX99!

I'm not able to reproduce this issue. Is it reproducible for you? Thank you!

[ybeshkarov]

Closed as no response.