code: def _handle_app_result_build_failure(self,out,err,exit_status,result_paths):
          
  
          try:
              raise ApplicationError, \
               'RAxML failed to produce an output file due to the following error: \n\n%s ' \
               % err.read()
          except:
              raise ApplicationError,\
                  'RAxML failed to run properly.'
docs: Catch the error when files are not produced