What is the problem?
I can see that there is a new update available, 1.8.4 but i can't update:
What did you already try to solve it?
Reboot, changing DNS server and using CLI
Have you tried running in safe mode?
No
Did running in safe mode solve the problem?
Not Tried
Systeminfo Bundle
You can download this in OctoPrint's System Information dialog ... no bundle, no support!)
octoprint-systeminfo-20220929110720.zip (10.2 KB)
Additional information about your setup
OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible
Octoprint 1.8.1
Debian 11