code: def execution_errors(self):
          
          if self.split_actions:
              # throttling split this action, get errors from the split
              return [dict(e) for s in self.split_actions for e in s.errors]
          else:
              return [dict(e) for e in self.errors]
docs: Return a list of commands that encountered execution errors, with the error.
  
          Each dictionary entry gives the command dictionary and the error dictionary
          :return: list of commands that gave errors, with their error information