upgraded yesterday a physical firewall, with nextloud, fail2ban, openvpn (and other services installed but not active at the moment) and all seems to work 
after the upgrade i’ve received this mail from cron daemon, but i had no time to investigate 
PHP Warning: PHP Startup: Unable to load dynamic library ‘smbclient.so’ (tried: /opt/rh/rh-php73/root/usr/lib64/php/modules/smbclient.so (/usr/lib64/samba/libreplace-samba4.so: version `SAMBA_4.9.1’ not found (required by /lib64/libwbclient.so.0)), /opt/rh/rh-php73/root/usr/lib64/php/modules/smbclient.so.so (/opt/rh/rh-php73/root/usr/lib64/php/modules/smbclient.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
thank you, and stay safe 