<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def errors(self):
 """ get all the errors [ValueError('invalid data',), RuntimeError('server not anwsering',)] """

        errors = []
        for meta in self:
            errors.extend(meta.errors)
        return errors