java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.widget.RecyclerView.setLayoutManager(android.support.v7.widget.RecyclerView$LayoutManager)' on a null object reference

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    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.widget.RecyclerView.setLayoutManager(android.support.v7.widget.RecyclerView$LayoutManager)' on a null object reference

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void android.support.v7.widget.RecyclerView.setLayoutManager(android.support.v7.widget.RecyclerView$LayoutManager)' on a null object reference

      at com.example.codru.stendensocial.ReadRss.onPostExecute()
    2. com.example.codru
      ReadRss.onPostExecute
      1. com.example.codru.stendensocial.ReadRss.onPostExecute(ReadRss.java:61)
      2. com.example.codru.stendensocial.ReadRss.onPostExecute(ReadRss.java:28)
      2 frames
    3. Android Platform
      AsyncTask.finish
      1. android.os.AsyncTask.finish(AsyncTask.java:651)
      1 frame