Strange Log-Noise in ne fail2ban server-logs

OS type and version: Ubuntu 20.02
Webmin version: 1.981
Virtualmin version: 6.17

I wonder about the noise I see at my new server in the fail2ban-logs: Hastebin

In my other Server, I only see some clean lines if some IP was blocked or unblocked.
It’s look like there is debug-output in the logs, but I can’t remember to change anything to debug… in fact, I even change the default-config in /etc/fail2ban/fail2ban.conf and set loglevel = ERROR to mute those log-noise… without success.

Any suggestion what the issue might be?

I found it, and it might be a thing that should be changed (because it’s some kindo of light-weight or logical BUG in VM)!
If you open the “Global Configuration” in fail2ban, and click only SAVE, without changing anything…

…then a new file was created at /etc/fail2ban/ : fail2ban.local. There you got only have this setting inside:

loglevel = 3

That’s cause those extensive messages in the logs.
I think it’s very confusing for users this way. If a user open an UI-Panel he expect, that the settings which is pre-setted in the UI are the current default settings.

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