No DRP key due to exception: java.lang.classnotfoundexception: com.android.webview.chromium.drp

Although the Android application built by the ionic framework running on the ionic framework has problems running on the genymotion simulator, although it runs well on real hardware (real Android phones)

I can see the error without DRP key caused by exception: java.lang.classnotfoundexception: com.android.webview.chromium.drp

The following is a fragment of the complete log in the logcat file:

09-27 21:53:24.258 I/ActivityManager( 5528): START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.ionicframework.myappandroid393856/.MainActivity (has extras)} from uid 10008 on display 0

09-27 21:53:24.317 I/art     ( 6438): Late-enabling -Xcheck:jni

09-27 21:53:24.318 I/ActivityManager( 5528): Start proc 6438:com.ionicframework.myappandroid393856/u0a60 for activity com.ionicframework.myappandroid393856/.MainActivity

09-27 21:53:24.375 W/System  ( 6438): ClassLoader referenced unkNown path: /data/app/com.ionicframework.myappandroid393856-1/lib/x86

09-27 21:53:24.480 V/WebViewFactory( 6438): webViewPackageName: com.android.webview

09-27 21:53:24.482 I/WebViewFactory( 6438): Loading com.android.webview version 44.0.2403.119 (code 246011910)

09-27 21:53:24.514 W/System  ( 6438): ClassLoader referenced unkNown path: /system/app/webview/lib/x86

09-27 21:53:24.526 I/LibraryLoader( 6438): Time to load native libraries: 1 ms (timestamps 8014-8015)

09-27 21:53:24.532 I/LibraryLoader( 6438): Expected native library version number "",actual native library version number ""

09-27 21:53:24.577 V/WebViewChromiumFactoryProvider( 6438): Binding Chromium to main looper Looper (main, tid 1) {10f7532}

09-27 21:53:24.578 I/LibraryLoader( 6438): Expected native library version number "",actual native library version number ""

09-27 21:53:24.578 I/chromium( 6438): [INFO:library_loader_hooks.cc(120)] Chromium logging enabled: level = 0, default verbosity = 0

09-27 21:53:24.589 I/BrowserStartupController( 6438): Initializing chromium process, singleProcess=true

09-27 21:53:24.589 W/art     ( 6438): Attempt to remove non-JNI local reference, dumping thread

09-27 21:53:24.590 E/SysUtils( 6438): ApplicationContext is null in ApplicationStatus

09-27 21:53:24.659 W/chromium( 6438): [WARNING:resource_bundle.cc(285)] locale_file_path.empty()

09-27 21:53:24.676 D/libEGL  ( 6438): loaded /system/lib/egl/libEGL_emulation.so

09-27 21:53:24.677 D/libEGL  ( 6438): loaded /system/lib/egl/libGLESv1_CM_emulation.so

09-27 21:53:24.697 D/libEGL  ( 6438): loaded /system/lib/egl/libGLESv2_emulation.so

09-27 21:53:24.704 E/libEGL  ( 6438): validate_display:255 error 3008 (EGL_BAD_DISPLAY)

09-27 21:53:24.704 E/libEGL  ( 6438): validate_display:255 error 3008 (EGL_BAD_DISPLAY)

09-27 21:53:24.705 D/        ( 6438): HostConnection::get() New Host Connection established 0xe8a614f0, tid 6438

09-27 21:53:24.881 E/eglCodecCommon( 6438): glUtilsParamSize: unkNow param 0x00008d57

09-27 21:53:25.010 W/AudioManagerAndroid( 6438): Requires BLUETOOTH permission

09-27 21:53:25.070 E/DataReductionProxySettingListener( 6438): No DRP key due to exception:java.lang.ClassNotFoundException: com.android.webview.chromium.Drp

09-27 21:53:25.108 W/art     ( 6438): Attempt to remove non-JNI local reference, dumping thread

09-27 21:53:25.140 W/AwContents( 6438): onDetachedFromWindow called when already detached. Ignoring

09-27 21:53:25.154 D/SystemWebViewEngine( 6438): CordovaWebView is running on device made by: Genymotion

09-27 21:53:25.163 W/art     ( 6438): Attempt to remove non-JNI local reference, dumping thread

09-27 21:53:25.163 W/art     ( 6438): Attempt to remove non-JNI local reference, dumping thread

09-27 21:53:25.174 E/Surface ( 5893): getSlotFromBufferLocked: unkNown buffer: 0xe8a03180

09-27 21:53:25.267 D/OpenGLRenderer( 6438): Use EGL_SWAP_BEHAVIOR_PRESERVED: true

09-27 21:53:25.332 V/StatusBar( 6438): StatusBar: initialization

resolvent:

I encountered this problem. It turned out that it was JavaScript containing some ES6 thick arrows

After deleting them and returning anonymous functions

The genymotion emulator will no longer throw this error. It is still on the Android studio emulator, but it does not affect JavaScript execution