应用在启动时在模拟器上崩溃，但不在设备上崩溃

Question

在模拟器上启动应用程序时，发生以下异常。但是在设备上运行可以正常工作。请帮助摆脱该问题。 大约五天就面临这个问题。无法获得任何适当的解决方案。

2018-10-13 07:45:15.423 1742-1756/system_process E/ActivityManager: Activity Manager Crash. UID:1000 PID:1742 TRANS:5
        java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String)' on a null object reference
            at android.app.LoadedApk.createAppFactory(LoadedApk.java:224)
            at android.app.LoadedApk.<init>(LoadedApk.java:152)
            at android.app.ActivityThread.getPackageInfo(ActivityThread.java:2043)
            at android.app.ActivityThread.getPackageInfo(ActivityThread.java:1998)
            at android.app.ActivityThread.getPackageInfo(ActivityThread.java:1970)
            at android.app.ContextImpl.createPackageContextAsUser(ContextImpl.java:2054)
            at com.android.server.AttributeCache.get(AttributeCache.java:135)
            at com.android.server.am.ActivityRecord.<init>(ActivityRecord.java:903)
            at com.android.server.am.ActivityStarter.startActivity(ActivityStarter.java:804)
            at com.android.server.am.ActivityStarter.startActivity(ActivityStarter.java:528)
            at com.android.server.am.ActivityStarter.startActivityMayWait(ActivityStarter.java:1057)
            at com.android.server.am.ActivityStarter.execute(ActivityStarter.java:473)
            at com.android.server.am.ActivityManagerService.startActivityAsUser(ActivityManagerService.java:4841)
            at com.android.server.am.ActivityManagerService.startActivity(ActivityManagerService.java:4817)
            at android.app.IActivityManager$Stub.onTransact(IActivityManager.java:146)
            at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:3114)
            at android.os.Binder.execTransact(Binder.java:726)
    2018-10-13 07:45:15.424 9564-9564/com.google.android.apps.nexuslauncher D/AndroidRuntime: Shutting down VM


        --------- beginning of crash
    2018-10-13 07:45:15.425 9564-9564/com.google.android.apps.nexuslauncher E/AndroidRuntime: FATAL EXCEPTION: main
        Process: com.google.android.apps.nexuslauncher, PID: 9564
        java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String)' on a null object reference
            at android.os.Parcel.createException(Parcel.java:1948)
            at android.os.Parcel.readException(Parcel.java:1865)
            at android.app.IActivityManager$Stub$Proxy.startActivity(IActivityManager.java:4541)
            at android.app.Instrumentation.execStartActivity(Instrumentation.java:1660)
            at android.app.Activity.startActivityForResult(Activity.java:4574)
            at com.android.launcher3.Launcher.startActivityForResult(SourceFile:1394)
            at android.app.Activity.startActivity(Activity.java:4889)
            at com.android.launcher3.Launcher.startActivitySafely(SourceFile:2000)
            at com.android.launcher3.Launcher.startAppShortcutOrInfoActivity(SourceFile:1850)
            at com.android.launcher3.Launcher.onClick(SourceFile:1703)
            at android.view.View.performClick(View.java:6579)
            at android.view.View.performClickInternal(View.java:6556)
            at android.view.View.access$3100(View.java:777)
            at android.view.View$PerformClick.run(View.java:25660)
            at android.os.Handler.handleCallback(Handler.java:819)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:164)
            at android.app.ActivityThread.main(ActivityThread.java:6656)
            at java.lang.reflect.Method.invoke(Native Method)
            at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)
         Caused by: android.os.RemoteException: Remote stack trace:
            at android.app.LoadedApk.createAppFactory(LoadedApk.java:224)
            at android.app.LoadedApk.<init>(LoadedApk.java:152)
            at android.app.ActivityThread.getPackageInfo(ActivityThread.java:2043)
            at android.app.ActivityThread.getPackageInfo(ActivityThread.java:1998)
            at android.app.ActivityThread.getPackageInfo(ActivityThread.java:1970)