java.lang.NullPointerException

Attempt to invoke virtual method 'android.os.Handler android.support.v4.app.FragmentHostCallback.getHandler()' on a null object reference

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  • Attempt to invoke virtual method 'android.os.Handler android.support.v4.app.FragmentHostCallback.getHandler()' on a null object reference
  • Attempt to invoke virtual method 'android.os.Handler android.support.v4.app.FragmentHostCallback.getHandler()' on a null object reference
  • Attempt to invoke virtual method 'android.os.Handler android.support.v4.app.FragmentHostCallback.getHandler()' on a null object reference
  • Stack trace

    • java.lang.NullPointerException: Attempt to invoke virtual method 'android.os.Handler android.support.v4.app.FragmentHostCallback.getHandler()' on a null object reference at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1646) at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:585) at android.support.v4.app.FragmentManagerImpl.popBackStackImmediate(FragmentManager.java:600) at marg.uk.fourthoffice.fragments.BCMasterDetailFragment.popBackStack(MyMasterDetailFragment.java:140) at marg.uk.fourthoffice.activities.BCOfficeActivity.onBackPressed(MainActivity.java:173) at marg.uk.fourthoffice.fragments.BCSwipeableCardsFragment$1.onClick(MyOtherFragment.java:189)

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