java.lang.NullPointerException: Attempt to invoke interface method 'void br.com.fiap.petwell.interfaces.AsyncResponse.processFinish(java.lang.String)' on a null object reference

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Attempt to invoke interface method 'void br.com.fiap.petwell.interfaces.AsyncResponse.processFinish(java.lang.String)' on a null object reference
java.lang.NullPointerException: Attempt to invoke interface method 'void br.com.fiap.petwell.interfaces.AsyncResponse.processFinish(java.lang.String)' on a null object reference
at br.com.fiap.petwell.requesttask.GetFeederRequestTask.onPostExecute(GetFeederRequestTask.java:38)
at br.com.fiap.petwell.requesttask.GetFeederRequestTask.onPostExecute(GetFeederRequestTask.java:15)
at android.os.AsyncTask.finish(AsyncTask.java:651)

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