Continuing the discussion from [SOLVED] 500 internal error after hard reset:
Unfortunately it’s broken again
After updating to 20.20 the machine hung and I had again to hard reset by unplugging and replugging power.
After that I again experienced the 500 error because of a non-running firewalld.
But now I receive this after trying to restart it (systemctl status excerpt):
Dez 26 10:46:04 odroidxu4 firewalld: WARNING: ipset not usable, disabling ipset usage in firewall. Dez 26 10:46:04 odroidxu4 firewalld: ERROR: INVALID_ZONE
I tried to restore firewalld from a former backup but that didn’t change the unusable ipset.
What now? How can I fix or regain the ipset?