Ignored class "CoursesWindow" re-declaration. Current - module: None, cls: <class '__main__.CoursesWindow'>, baseclass: None, filena me: None. Ignored - module: None, cls: None, baseclass: Popup, filename: E:\APP designer\course_case\course.kv.

这个错误提示是因为你在程序中重复定义了一个名为 "CoursesWindow" 的类，而且还在 kv 文件中继承了 Popup 类。可能的原因是你在程序中定义了类，但是在 kv 文件中也定义了相同命名的类。解决方案是检查一下你的代码，看看是否存在重复定义的类或命名冲突的情况。如果有，需要将其改名或删除其中一个。

相关问题

Executing tasks: [:app:assembleDebug] in project D:\Users\lenovo\AndroidStudioProjects\Pinduoduo WARNING: The specified Android SDK Build Tools version (27.0.0) is ignored, as it is below the minimum supported version (28.0.3) for Android Gradle Plugin 3.5.2. Android SDK Build Tools 28.0.3 will be used. To suppress this warning, remove "buildToolsVersion '27.0.0'" from your build.gradle file, as each version of the Android Gradle Plugin now has a default version of the build tools. > Task :app:preBuild UP-TO-DATE > Task :app:preDebugBuild UP-TO-DATE > Task :app:checkDebugManifest UP-TO-DATE > Task :app:generateDebugBuildConfig UP-TO-DATE > Task :app:javaPreCompileDebug UP-TO-DATE > Task :app:mainApkListPersistenceDebug UP-TO-DATE > Task :app:generateDebugResValues UP-TO-DATE > Task :app:createDebugCompatibleScreenManifests UP-TO-DATE > Task :app:mergeDebugShaders UP-TO-DATE > Task :app:compileDebugShaders UP-TO-DATE > Task :app:generateDebugAssets UP-TO-DATE > Task :app:compileDebugRenderscript NO-SOURCE > Task :app:compileDebugAidl NO-SOURCE > Task :app:generateDebugResources UP-TO-DATE > Task :app:mergeDebugResources UP-TO-DATE > Task :app:processDebugManifest > Task :app:processDebugResources FAILED AGPBI: {"kind":"error","text":"Android resource linking failed","sources":[{"file":"D:\\Users\\lenovo\\AndroidStudioProjects\\Pinduoduo\\app\\src\\main\\res\\layout\\activity_main.xml","position":{"startLine":34}}],"original":"D:\\Users\\lenovo\\AndroidStudioProjects\\Pinduoduo\\app\\src\\main\\res\\layout\\activity_main.xml:35: AAPT: error: '#875ale' is incompatible with attribute textColor (attr) reference|color.\n ","tool":"AAPT"} FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':app:processDebugResources'. > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade > Android resource linking failed D:\Users\lenovo\AndroidStudioProjects\Pinduoduo\app\src\main\res\layout\activity_main.xml:35: AAPT: error: '#875ale' is incompatible with attribute textColor (attr) reference|color. * 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 3s 11 actionable tasks: 2 executed, 9 up-to-date

根据报错信息，可以看到问题出现在 "D:\Users\lenovo\AndroidStudioProjects\Pinduoduo\app\src\main\res\layout\activity_main.xml" 文件的第35行，提示错误是 "#875ale" 与 "textColor" 属性不兼容。

建议您检查一下这个文件的第35行，看看是否有拼写错误或者其他语法错误。另外，您也可以在命令行中运行 "gradlew assembleDebug --stacktrace" 命令，以获取更详细的错误信息。

yolov5 Plotting labels... Exception ignored in: <function TransformNode.set_children.<locals>.<lambda> at 0x7f4f25232e50> Traceback (most recent call last):

这个问题是关于计算机视觉的技术问题，我可以回答。这个错误信息是在使用 YOLOv5 进行标注时出现的，可能是由于标注数据格式不正确或者标注文件路径错误导致的。需要检查标注数据和文件路径是否正确，并且确保使用的 YOLOv5 版本是最新的。