You got some errors in your debug log.
2021-05-15 06:57:00.540 624/T628] WARN: Command "ip neigh show" failed!
[2021-05-15 06:57:00.540 624/T628] Message: Success
[2021-05-15 06:58:00.675 624/T628] WARN: Command "ip neigh show" failed!
[2021-05-15 06:58:00.675 624/T628] Message: Success
[2021-05-15 06:59:00.785 624/T628] Notice: Database size is 31.22 MB, deleted 5 rows
[2021-05-15 06:59:00.785 624/T628] WARN: Command "ip neigh show" failed!
[2021-05-15 06:59:00.785 624/T628] Message: Success
[2021-05-15 07:00:00.892 624/T628] WARN: Command "ip neigh show" failed!
[2021-05-15 07:00:00.892 624/T628] Message: Success
[2021-05-15 07:01:01.000 624/T628] WARN: Command "ip neigh show" failed!
[2021-05-15 07:01:01.000 624/T628] Message: Success
[2021-05-15 07:02:00.101 624/T628] WARN: Command "ip neigh show" failed!
[2021-05-15 07:02:00.101 624/T628] Message: Success
[2021-05-15 07:03:00.176 624/T628] WARN: Command "ip neigh show" failed!
[2021-05-15 07:03:00.176 624/T628] Message: Success
[2021-05-15 07:04:00.280 624/T628] WARN: Command "ip neigh show" failed!
[2021-05-15 07:04:00.280 624/T628] Message: Success
[2021-05-15 07:05:00.381 624/T628] WARN: Command "ip neigh show" failed!
[2021-05-15 07:05:00.381 624/T628] Message: Success
What's the output of
ip neigh show