// android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@9e52a24 is not valid; is your activity running?
// at android.view.ViewRootImpl.setView(ViewRootImpl.java:567)
// at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:310)
// at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:85)
// at android.app.Dialog.show(Dialog.java:319)
// at de.baumann.hhsmoodle.helper.helper_webView$1.onPageFinished(helper_webView.java:112)
// at com.android.webview.chromium.WebViewContentsClientAdapter.onPageFinished(WebViewContentsClientAdapter.java:224)
// at org.chromium.android_webview.AwContentsClientCallbackHelper$MyHandler.handleMessage(AwContentsClientCallbackHelper.java:72)
// at android.os.Handler.dispatchMessage(Handler.java:102)
// at android.os.Looper.loop(Looper.java:148)
// at android.app.ActivityThread.main(ActivityThread.java:5417)
// at java.lang.reflect.Method.invoke(Native Method)
// at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
// at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)