samba - Jan 2021 - Strange logs: check_usershare_stat: file /var/lib/samba/usershares/ owned by uid 0 is not a regular file

These log messages have re-appeared - for the first time since my original post.
Seems that they appear on the 1st of the month?
Does this give any clue why they are occurring?

Happy new Year to all!

Roy
> -----Original Message-----
> From: Roy Eastwood <spindles7 at gmail.com>
> Sent: 01 December 2020 14:31
> To: samba at lists.samba.org
> Subject: Strange logs: check_usershare_stat: file
/var/lib/samba/usershares/ owned by uid 0 is not a regular file
> 
> These logs:
> 
> 	Dec  1 09:31:16 lxd-m1 smbd[26323]:   check_usershare_stat: file
/var/lib/samba/usershares/ owned by uid 0 is not a regular
> file
> 
> have started to appear this morning in sysvol.   25 such logs appeared
within a minute.  No changes have been made for some time
on
> this machine.  It's a member server running samba 4.13.2 on Debian
Buster.    Is this a known bug?
> 
> Regards,
> Roy