Can't login to Pi-Hole Dashboard after recent update

[DebugHuy]

I am unable to login to the Pi-Hole dashboard after a recent update

I'm using an OG Raspberry Pi and I have ran pihole -d, but it seems like everything is working.

The debug token is:

https://tricorder.pi-hole.net/ax6SqKDF/

[rdwebdesign]

Your debug log doesn't show errors.
Looks like the web server config is fine and it is running.

*** [ DIAGNOSING ]: Dashboard headers
[✓] Web interface X-Header: X-Pi-hole: The Pi-hole Web interface is working!

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Did you try to login using the IP: http://192.168.1.202/admin ?

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Note:
I noticed your disk is almost full:

*** [ DIAGNOSING ]: Disk usage
   Filesystem      Size  Used Avail Use% Mounted on
   /dev/root       6.9G  6.5G  147M  98% /

And Pi-hole warning messages also show the same: 7.3GB used, 7.4GB total

Sometimes PHP fails to create new sessions if there is no free disk space to save the session files.
If the problem persists, try to free up some space and try again.