Privacy Browser Android

java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState

at android.support.v4.a.o.z(Unknown Source:8)

at android.support.v4.a.o.a(Unknown Source:2)

at android.support.v4.a.c.a(Unknown Source:79)

at android.support.v4.a.c.c(Unknown Source:1)

at android.support.v4.a.h.a(Unknown Source:13)

at com.stoutner.privacybrowser.activities.MainWebViewActivity$9.onPageFinished(Unknown Source:471)

at com.android.webview.chromium.WebViewContentsClientAdapter.onPageFinished(WebViewContentsClientAdapter.java:199)

at org.chromium.android_webview.AwContentsClientCallbackHelper$MyHandler.handleMessage(AwContentsClientCallbackHelper.java:72)

at android.os.Handler.dispatchMessage(Handler.java:106)

at android.os.Looper.loop(Looper.java:164)

at android.app.ActivityThread.main(ActivityThread.java:6499)

at java.lang.reflect.Method.invoke(Native Method)

at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:440)

at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)

at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:108)