我尝试调试我的应用程序，但它向我展示了这一点：
What went wrong:
Failed to capture fingerprint of output files for task ':app:compileFlutterBuildDebugArm' property 'outputDirectory' during up-to-date check.
Could not read path 'C:\Users\(myuser)\Documents\pop_up\build\app\intermediates\flutter\debug\android-arm\flutter_assets\fonts'
Try:
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BUILD FAILED in 1s
Gradle task assembleDebug failed with exit code 1
Exited (sigterm)
flutter build bundle --target C：\ Users（myuser）\ Documents \ pop_up \ lib \ main.dart --target-platform android-arm --filesystem-scheme org-dartlang-root --track-widget-创建--depfile C：\ Users（myuser）\ Documents \ pop_up \ build \ app \ intermediates \ flutter \ debug \ android-arm / snapshot_blob.bin.d --asset-dir C：\ Users（myuser）\ Documents \ pop_up \ build \ app \ intermediates \ flutter \ debug \ android-arm / flutter_assets --debug
FileSystemException：FileSystemException：删除失败，路径='C：\ Users（myuser）\ Documents \ pop_up \ build \ app \ intermediates \ flutter \ debug \ android-arm / flutter_assets'（操作系统错误：El Directorio noestávacío 。 ，errno = 145）
#0 _Directory._deleteSync (dart:io/directory_impl.dart:206:7)
#1 FileSystemEntity.deleteSync (dart:io/file_system_entity.dart:464:47)
#2 ForwardingFileSystemEntity.deleteSync (package:file/src/forwarding/forwarding_file_system_entity.dart:72:16)
#3 writeBundle (package:flutter_tools/src/bundle.dart:181:15)
<asynchronous suspension>
#4 assemble (package:flutter_tools/src/bundle.dart:172:9)
<asynchronous suspension>
#5 BundleBuilder.build (package:flutter_tools/src/bundle.dart:115:11)
<asynchronous suspension>
#6 BuildBundleCommand.runCommand (package:flutter_tools/src/commands/build_bundle.dart:119:25)
<asynchronous suspension>
#7 FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:490:18)
<asynchronous suspension>
#8 FlutterCommand.run.<anonymous closure> (package:flutter_tools/src/runner/flutter_command.dart:407:33)
<asynchronous suspension>
#9 AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:154:29)
<asynchronous suspension>
#10 _rootRun (dart:async/zone.dart:1124:13)
#11 _CustomZone.run (dart:async/zone.dart:1021:19)
#12 _runZoned (dart:async/zone.dart:1516:10)
#13 runZoned (dart:async/zone.dart:1463:12)
#14 AppContext.run (package:flutter_tools/src/base/context.dart:153:18)
<asynchronous suspension>
#15 FlutterCommand.run (package:flutter_tools/src/runner/flutter_command.dart:397:20)
#16 CommandRunner.runCommand (package:args/command_runner.dart:197:27)
<asynchronous suspension>
#17 FlutterCommandRunner.runCommand.<anonymous closure> (package:flutter_tools/src/runner/flutter_command_runner.dart:402:21)
<asynchronous suspension>
#18 AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:154:29)
<asynchronous suspension>
#19 _rootRun (dart:async/zone.dart:1124:13)
#20 _CustomZone.run (dart:async/zone.dart:1021:19)
#21 _runZoned (dart:async/zone.dart:1516:10)
#22 runZoned (dart:async/zone.dart:1463:12)
#23 AppContext.run (package:flutter_tools/src/base/context.dart:153:18)
<asynchronous suspension>
#24 FlutterCommandRunner.runCommand (package:flutter_tools/src/runner/flutter_command_runner.dart:356:19)
<asynchronous suspension>
#25 CommandRunner.run.<anonymous closure> (package:args/command_runner.dart:112:25)
#26 new Future.sync (dart:async/future.dart:224:31)
#27 CommandRunner.run (package:args/command_runner.dart:112:14)
#28 FlutterCommandRunner.run (package:flutter_tools/src/runner/flutter_command_runner.dart:242:18)
#29 run.<anonymous closure>.<anonymous closure> (package:flutter_tools/runner.dart:63:22)
<asynchronous suspension>
#30 _rootRun (dart:async/zone.dart:1124:13)
#31 _CustomZone.run (dart:async/zone.dart:1021:19)
#32 _runZoned (dart:async/zone.dart:1516:10)
#33 runZoned (dart:async/zone.dart:1500:12)
#34 run.<anonymous closure> (package:flutter_tools/runner.dart:61:18)
<asynchronous suspension>
#35 AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:154:29)
<asynchronous suspension>
#36 _rootRun (dart:async/zone.dart:1124:13)
#37 _CustomZone.run (dart:async/zone.dart:1021:19)
#38 _runZoned (dart:async/zone.dart:1516:10)
#39 runZoned (dart:async/zone.dart:1463:12)
#40 AppContext.run (package:flutter_tools/src/base/context.dart:153:18)
<asynchronous suspension>
#41 runInContext (package:flutter_tools/src/context_runner.dart:58:24)
<asynchronous suspension>
#42 run (package:flutter_tools/runner.dart:50:10)
#43 main (package:flutter_tools/executable.dart:65:9)
<asynchronous suspension>
#44 main (file:///C:/src/flutter/packages/flutter_tools/bin/flutter_tools.dart:8:3)
#45 _startIsolate.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:303:32)
#46 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:172:12)
[✓] Flutter (Channel master, v1.9.1-pre.109, on Microsoft Windows [Versión 10.0.16299.1087], locale es-AR)
• Flutter version 1.9.1-pre.109 at C:\src\flutter
• Framework revision ce6dedfc0c (9 hours ago), 2019-08-20 01:03:36 -0400
• Engine revision 10167db433
• Dart version 2.5.0
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.0)
• Android SDK at C:\Users\(myuser)\AppData\Local\Android\sdk
• Android NDK location not configured (optional; useful for native profiling support)
• Platform android-29, build-tools 29.0.0
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1343-b01)
• All Android licenses accepted.
[✓] Android Studio (version 3.4)
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin version 38.2.1
• Dart plugin version 183.6270
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1343-b01)
[✓] VS Code (version 1.37.1)
• VS Code at C:\Users\(myuser)\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.3.0
[✓] Connected device (1 available)
• LG H440AR • LGH440ARad51902f • android-arm • Android 5.0.1 (API 21)
• No issues found!
答案 0 :(得分：0)
您是否删除了资产文件夹中的某些文件，而您也在pubspec.yaml上引用了该文件？如果是这样，那就是无法构建应用程序的原因，请尝试删除对已删除文件（应用程序的pubspec.yaml中不存在的文件）的引用，然后再次运行项目以查看其是否成功构建。
答案 1 :(得分：0)
似乎是某种文件锁定问题...当尝试打开输出中指定的路径时，Windows资源管理器实际上返回“访问被拒绝”，因此我无法访问该文件夹并且无法更改安全性。 重新启动后，即可访问该文件夹。
什么对我有用（目前且仅按照确切的顺序）：