SMB Shares crashed and no longer in network after 6.11.2 update

Hi,
The upgrade went fine, no issues.

I started coping some photos from an iMac to the Server, which went fine for about an hour.

Suddenly the copy process dies with an error, and ALL the SMB shares are gone.

Nov  7 16:51:36 Futurama  emhttpd: read SMART /dev/sde
Nov  7 16:54:43 Futurama  dhcpcd[1229]: br0: failed to renew DHCP, rebinding
Nov  7 16:54:43 Futurama  dhcpcd[1229]: br0: leased 192.168.7.227 for 14400 seconds
Nov  7 16:58:35 Futurama  smbd[29181]: [2022/11/07 16:58:35.887620,  0] ../../source3/smbd/open.c:958(fd_openat)
Nov  7 16:58:35 Futurama  smbd[29181]:   Too many open files, unable to open more!  smbd's max open files = 16424
Nov  7 16:58:36 Futurama  smbd[29181]: [2022/11/07 16:58:36.034052,  0] ../../source3/smbd/open.c:958(fd_openat)
Nov  7 16:58:36 Futurama  smbd[29181]:   Too many open files, unable to open more!  smbd's max open files = 16424
Nov  7 16:58:36 Futurama  smbd[29181]: [2022/11/07 16:58:36.050145,  0] ../../source3/smbd/files.c:1199(synthetic_pathref)
Nov  7 16:58:36 Futurama  smbd[29181]:   synthetic_pathref: opening [events/albums/frame/20181004_122419.jpg] failed
and repeat  over and over

root@Futurama:~# cat /proc/sys/fs/file-max
3231614
root@Futurama:~# cat /proc/sys/fs/file-nr
20256   0       3231614
root@Futurama:~# sysctl fs.file-max
fs.file-max = 3231614
root@Futurama:~# ulimit -n
40960
root@Futurama:~# ulimit -Hn
40960

What's going on?.