docs: def get_query_errors(self):
      """ Return a list of base-wise error observations for the query 
  
      :returns: list of base-wise errors
      :rtype: list of HPA groups
  
      """
      if self._query_errors: return self._query_errors
      v = []
      for i in range(len(self._query_hpas)):
        v.append(self.get_query_error(i))
      return v