Never Had This Issue Before

Expected Behaviour:

Trying to access pi.hole/admin gui
-Raspberry Pi 4

Actual Behaviour:

"This site can’t be reached"

pi.hole refused to connect.

I can ping the device's IP, hostname; and SSH into the device successfully. No access to gui through IP or http://pi.hole/admin

Debug Token:

Your debug log is empty, please upload a new one.