Samba Dump uses a lot of space

NethServer Version: 7.7.1908
Dear community,
Looking at our Disk usage shows that in directory /var/log/samba/cores/smbd we need 141GB of space- that’s quite much. Could you please give advice, what that is and if it is possible to clear that space safely?
Only thing I found was
Thank you!

Core dumps can be generally erased safely. However they are useful to understand why smbd crashes.

Look at the files creation timestamps. Are the crashes still happening?

I´ll look- thank you for response!
and no the youngest are from Mar2019;

what method to use (rm -f .) ?