Android : infinite ViewPager with fragment

I am new in Android. I used the InfiniteViewPager library in my app and I have ten fragments in my app. When I change pages in page 6, the app will crash and I got the below error. How to fix it?

(FragmentManager.java:486)
    at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
    at gh.sample.infinityLibrary.InfinitePagerAdapter.finishUpdate(InfinitePagerAdapter.java:67)
    at android.support.v4.view.ViewPager.populate(ViewPager.java:1073)
    at android.support.v4.view.ViewPager.populate(ViewPager.java:919)
    at android.support.v4.view.ViewPager$3.run(ViewPager.java:249)
    at android.support.v4.view.ViewPager.completeScroll(ViewPager.java:1766)
    at android.support.v4.view.ViewPager.onInterceptTouchEvent(ViewPager.java:1901)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1817)
    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1875)
    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1875)
    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1875)
    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1875)
    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1875)
    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1875)
    at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1953)