The second level task is disconnected every one minute

[uncmd]

I have a task that runs every five seconds, and when Using MySql as storage, it stops running every minute. The task creation time is as follows 2020-10-16 01:41:10.394231 2020-10-16 01:41:15.299641 2020-10-16 01:41:20.372113 2020-10-16 01:42:24.808185 2020-10-16 01:42:25.505259 2020-10-16 01:42:30.176087 2020-10-16 01:42:35.254335 2020-10-16 01:42:40.401227 2020-10-16 01:42:45.360743 2020-10-16 01:42:50.454366 2020-10-16 01:42:55.450909 2020-10-16 01:43:00.899917 2020-10-16 01:43:05.417974 2020-10-16 01:43:10.256303 2020-10-16 01:43:15.394097 2020-10-16 01:43:20.408048 2020-10-16 01:43:25.339478 2020-10-16 01:44:33.63293 2020-10-16 01:44:35.305769 2020-10-16 01:44:40.64665