I forget to add:
This is the 17th VPS. I do same things, same OS Debian 11, updated. Installing: Fail2ban, PHP 8.1, OLS, MySQL 8.0, Redis. That is all.
Okay, randomly not work: OLS 443 port (not listening), Firewall not installed (okay, I install again with CMD), yet new Redis version in aaPanel and not work...
On one server the OLS SSL, on second Firewall, third OLS SSL and Redis... 13 servers are fine, after it random errors (on same Debian).
First page:
You updated the script what is bad and not work:
Old install script: