在 iOS 上运行 Flutter 调试时卡在“等待观测站端口”

Question

似乎不知从何而来，我无法再在我的物理 iPhone (iOS 14.6) 上以调试模式运行我的 Flutter 应用程序。我可以让它在我的真实设备上以发布模式运行，并在模拟器上以调试模式运行。

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我在 SO 上发现了类似的问题，但其中大多数与 Android 相关，我尝试了我能找到的所有非 Android 相关解决方案，例如：，将flutter cleanflutter 版本升级到最新的稳定版本，，flutter pub cache repair删除构建文件夹，pod install, pod update`，重新安装 flutter sdk，重新启动我的 macbook，重新启动我的 iPhone，凡是你能想到的。但没有运气。

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在设备上部署后，它会卡住Application launched on the device. Waiting for observatory port.大约一分钟，超时后会出现以下错误：

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...\n\n[ +346 ms] [ 52%] CreatingStagingDirectory\n[        ] [ 57%] ExtractingPackage\n[        ] [ 60%] InspectingPackage\n[  +16 ms] [ 60%] TakingInstallLock\n[  +37 ms] [ 65%] PreflightingApplication\n[ +272 ms] [ 65%] InstallingEmbeddedProfile\n[   +5 ms] [ 70%] VerifyingApplication\n[ +726 ms] [ 75%] CreatingContainer\n[   +5 ms] [ 80%] InstallingApplication\n[   +7 ms] [ 85%] PostflightingApplication\n[   +1 ms] [ 90%] SandboxingApplication\n[   +7 ms] [ 95%] GeneratingApplicationMap\n[  +59 ms] [100%] Installed package build/ios/iphoneos/Runner.app\n[ +100 ms] ------ Debug phase ------\n[        ] Starting debug of 00008101-00191DEA2130001E (D53pAP, D53pAP, uknownos, unkarch) a.k.a. 'iPhone 12 Pro' connected through USB...\n[ +970 ms] [  0%] Looking up developer disk image\n[  +17 ms] [ 95%] Developer disk image mounted successfully\n[ +373 ms] [100%] Connecting to remote debug server\n[        ] -------------------------\n[  +87 ms] (lldb) command source -s 0 '/tmp/6DF9D3E0-6EED-4F1F-B6BA-9BEA141ED784/fruitstrap-lldb-prep-cmds-00008101_00191DEA2130001E'\n[        ] Executing commands in '/tmp/6DF9D3E0-6EED-4F1F-B6BA-9BEA141ED784/fruitstrap-lldb-prep-cmds-00008101_00191DEA2130001E'.\n[        ] (lldb)     platform select remote-ios --sysroot '/Users/paul/Library/Developer/Xcode/iOS DeviceSupport/14.6 (18F72)/Symbols'\n[        ]   Platform: remote-ios\n[        ]  Connected: no\n[        ]   SDK Path: "/Users/paul/Library/Developer/Xcode/iOS DeviceSupport/14.6 (18F72)/Symbols"\n[        ] (lldb)     target create "/Users/paul/Projects/SchipholRedesign/vliegmeister/build/ios/iphoneos/Runner.app"\n[+1352 ms] Current executable set to '/Users/paul/Projects/SchipholRedesign/vliegmeister/build/ios/iphoneos/Runner.app' (arm64).\n[        ] (lldb)     script fruitstrap_device_app="/private/var/containers/Bundle/Application/3E80524D-96A9-485A-B4D6-5D111AD4CE6E/Runner.app"\n[        ] (lldb)     script fruitstrap_connect_url="connect://127.0.0.1:52803"\n[        ] (lldb)     script fruitstrap_output_path=""\n[        ] (lldb)     script fruitstrap_error_path=""\n[        ] (lldb)     target modules search-paths add /usr "/Users/paul/Library/Developer/Xcode/iOS DeviceSupport/14.6 (18F72)/Symbols/usr" /System\n"/Users/paul/Library/Developer/Xcode/iOS DeviceSupport/14.6 (18F72)/Symbols/System"\n"/private/var/containers/Bundle/Application/3E80524D-96A9-485A-B4D6-5D111AD4CE6E"\n"/Users/paul/Projects/SchipholRedesign/vliegmeister/build/ios/iphoneos" "/var/containers/Bundle/Application/3E80524D-96A9-485A-B4D6-5D111AD4CE6E"\n"/Users/paul/Projects/SchipholRedesign/vliegmeister/build/ios/iphoneos" /Developer "/Users/paul/Library/Developer/Xcode/iOS DeviceSupport/14.6\n(18F72)/Symbols/Developer"\n[  +21 ms] (lldb)     command script import "/tmp/6DF9D3E0-6EED-4F1F-B6BA-9BEA141ED784/fruitstrap_00008101_00191DEA2130001E.py"\n[   +4 ms] (lldb)     command script add -f fruitstrap_00008101_00191DEA2130001E.connect_command connect\n[        ] (lldb)     command script add -s asynchronous -f fruitstrap_00008101_00191DEA2130001E.run_command run\n[        ] (lldb)     command script add -s asynchronous -f fruitstrap_00008101_00191DEA2130001E.autoexit_command autoexit\n[        ] (lldb)     command script add -s asynchronous -f fruitstrap_00008101_00191DEA2130001E.safequit_command safequit\n[        ] (lldb)     connect\n[  +32 ms] (lldb)     run\n[ +373 ms] success\n[        ] Application launched on the device. Waiting for observatory port.\n[+30021 ms] Installing and launching... (completed in 49.1s)\n[   +1 ms] Error launching application on iPhone 12 Pro Paul.\n[   +6 ms] "flutter run" took 260,021ms.\n[   +4 ms] \n           #0      throwToolExit (package:flutter_tools/src/base/common.dart:10:3)\n           #1      RunCommand.runCommand (package:flutter_tools/src/commands/run.dart:644:9)\n           <asynchronous suspension>\n           #2      FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:1157:12)\n           <asynchronous suspension>\n           #3      FlutterCommand.run.<anonymous closure> (package:flutter_tools/src/runner/flutter_command.dart:1009:27)\n           <asynchronous suspension>\n           #4      AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)\n           <asynchronous suspension>\n           #5      AppContext.run (package:flutter_tools/src/base/context.dart:149:12)\n           <asynchronous suspension>\n           #6      CommandRunner.runCommand (package:args/command_runner.dart:197:13)\n           <asynchronous suspension>\n           #7      FlutterCommandRunner.runCommand.<anonymous closure> (package:flutter_tools/src/runner/flutter_command_runner.dart:278:9)\n           <asynchronous suspension>\n           #8      AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)\n           <asynchronous suspension>\n           #9      AppContext.run (package:flutter_tools/src/base/context.dart:149:12)\n           <asynchronous suspension>\n           #10     FlutterCommandRunner.runCommand (package:flutter_tools/src/runner/flutter_command_runner.dart:234:5)\n           <asynchronous suspension>\n           #11     run.<anonymous closure>.<anonymous closure> (package:flutter_tools/runner.dart:64:9)\n           <asynchronous suspension>\n           #12     run.<anonymous closure> (package:flutter_tools/runner.dart:62:12)\n           <asynchronous suspension>\n           #13     AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)\n           <asynchronous suspension>\n           #14     AppContext.run (package:flutter_tools/src/base/context.dart:149:12)\n           <asynchronous suspension>\n           #15     runInContext (package:flutter_tools/src/context_runner.dart:73:10)\n           <asynchronous suspension>\n           #16     main (package:flutter_tools/executable.dart:90:3)\n           <asynchronous suspension>\n           \n           \n[   +2 ms] ensureAnalyticsSent: 0ms\n[   +1 ms] Running shutdown hooks\n[        ] Shutdown hook priority 4\n[   +1 ms] Shutdown hooks complete\n[        ] (lldb) process detach\n[        ] exiting with code 1\n

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我试过

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这是我的$ flutter doctor -v：

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[\xe2\x9c\x93] Flutter (Channel unknown, 2.0.6, on macOS 11.4 20F71 darwin-x64, locale en-NL)\n    \xe2\x80\xa2 Flutter version 2.0.6 at /Users/paul/Development/flutter\n    \xe2\x80\xa2 Framework revision 1d9032c7e1 (10 weeks ago), 2021-04-29 17:37:58 -0700\n    \xe2\x80\xa2 Engine revision 05e680e202\n    \xe2\x80\xa2 Dart version 2.12.3\n\n[\xe2\x9c\x93] Android toolchain - develop for Android devices (Android SDK version 30.0.3)\n    \xe2\x80\xa2 Android SDK at /Users/paul/Library/Android/sdk\n    \xe2\x80\xa2 Platform android-30, build-tools 30.0.3\n    \xe2\x80\xa2 Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java\n    \xe2\x80\xa2 Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)\n    \xe2\x80\xa2 All Android licenses accepted.\n\n[\xe2\x9c\x93] Xcode - develop for iOS and macOS\n    \xe2\x80\xa2 Xcode at /Applications/Xcode.app/Contents/Developer\n    \xe2\x80\xa2 Xcode 12.5.1, Build version 12E507\n    \xe2\x80\xa2 CocoaPods version 1.10.1\n\n[\xe2\x9c\x93] Chrome - develop for the web\n    \xe2\x80\xa2 Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome\n\n[\xe2\x9c\x93] Android Studio (version 4.1)\n    \xe2\x80\xa2 Android Studio at /Applications/Android Studio.app/Contents\n    \xe2\x80\xa2 Flutter plugin can be installed from:\n       https://plugins.jetbrains.com/plugin/9212-flutter\n    \xe2\x80\xa2 Dart plugin can be installed from:\n       https://plugins.jetbrains.com/plugin/6351-dart\n    \xe2\x80\xa2 Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)\n\n[\xe2\x9c\x93] VS Code (version 1.57.1)\n    \xe2\x80\xa2 VS Code at /Applications/Visual Studio Code.app/Contents\n    \xe2\x80\xa2 Flutter extension version 3.24.0\n\n[\xe2\x9c\x93] Connected device (3 available)\n    \xe2\x80\xa2 iPhone 12 Pro (mobile) \xe2\x80\xa2 00008101-00191DEA2130001E            \xe2\x80\xa2 ios            \xe2\x80\xa2 iOS 14.6\n    \xe2\x80\xa2 iPhone 12 Pro (mobile)      \xe2\x80\xa2 F10EEAA2-7C15-4D4E-92EC-9F46BF814723 \xe2\x80\xa2 ios            \xe2\x80\xa2 com.apple.CoreSimulator.SimRuntime.iOS-14-5\n      (simulator)\n    \xe2\x80\xa2 Chrome (web)                \xe2\x80\xa2 chrome                               \xe2\x80\xa2 web-javascript \xe2\x80\xa2 Google Chrome 91.0.4472.114\n\n\xe2\x80\xa2 No issues found!\n

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有谁在 iOS 上认识到这个问题并且可能知道它可能是什么？

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