Error on Click GroupItem when Group is collapsing #24

Hi Everyone, i have an issue when i click on a groupitem while the group is collapsing.
I need to know how solve this problem because is a common error to make by the user.

com.example.project E/AndroidRuntime: FATAL EXCEPTION: main java.lang.ArrayIndexOutOfBoundsException: length=40; index=-1 at java.util.ArrayList.get(ArrayList.java:306) at com.appeaser.sublimenavigationviewlibrary.SublimeMenuPresenter$MenuRecyclerAdapter.getItem(SublimeMenuPresenter.java:405) at com.appeaser.sublimenavigationviewlibrary.SublimeMenuPresenter$BaseHolder.onClick(SublimeMenuPresenter.java:204) at android.view.View.performClick(View.java:4084) at android.view.View$PerformClick.run(View.java:16966) at android.os.Handler.handleCallback(Handler.java:615) at android.os.Handler.dispatchMessage(Handler.java:92) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:4745) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) at dalvik.system.NativeStart.main(Native Method)