def get_failed_task_error(self, task_id):
        async_result = self.celery.AsyncResult(task_id)
        return async_result.result
Gets a failed task's error by the task's id
dataset/ETHPy150Open cloudify-cosmo/cloudify-manager/rest-service/manager_rest/celery_client.py/CeleryClient.get_failed_task_error