From VTRMobile app - though may affect core version too.

Error Message

java.lang.IllegalStateException: setSelectedNavigationIndex not valid for current navigation mode

Where

Unknown Source

Short Stacktrace
0 java.lang.IllegalStateException: setSelectedNavigationIndex not valid for current navigation mode
1 at android.support.v7.app.bg.a(Unknown Source)
2 at org.digitalcampus.oppia.activity.c.run(Unknown Source)
3 at android.os.Handler.handleCallback(Handler.java:739)
4 at android.os.Handler.dispatchMessage(Handler.java:95)
5 at android.os.Looper.loop(Looper.java:135)
6 at android.app.ActivityThread.main(ActivityThread.java:5297)
7 at java.lang.reflect.Method.invoke(Native Method)
8 at java.lang.reflect.Method.invoke(Method.java:372)
9 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:908)
10 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:703)
Tag
log
Affected App Versions

6.0.2
Affected OS Versions

5.0.1