[PROBLEM] How to uninstall fail2ban? it fails with errors.

[postcd]

I have installed fail2ban: http://forum.xbian.org/thread-4178-post-37899.html#pid37899 (now closed )
But it can't uninstall now (as per the output)

Quote:dpkg: error processing package fail2ban (--remove):
installed fail2ban package pre-removal script subprocess returned error exit status 1

Running on BCM2711 with XBian 12.0 - Bullseye, kernel: Linux ARM 32-bit version 6.1.66+

Please what to try?

UPDATE:
I have prefixed three lines of the second "if" confition in /var/lib/dpkg/info/fail2ban.prerm by character "#" and then it removed the package without "pre-removal script" error. Thanks