ils-video-recorder:解决类型转换报错

ils_common_video/isc_video/recorder.py

@@ -251,7 +251,7 @@ class ProcessMessage:
             if (next_retry_time - event['start_time']) > timedelta(days=3):
                 # 重试最长时间为3天
                 status = 4
-                remark = remark + '+failed+end.'
+                remark = (remark or 'start') + '+failed+end.'
                 # TODO 钉钉异常告警
             else:
                 remark = (remark or 'start') + '+failed'