logout button doesn't work...

of all the things to not work... I feel kind of ashamed...

hey there I'm new so sorry for that my first messages are asking for help but I'm a little desperate...

I'm trying to fix the index not refreshing as it should once you have pressed the logout button in account.php

intended function:
user wants to log out
goes to account
presses log out
gets sent to index and has to login or register(sign in)

but that's not happening idk what to do

I removed the images file so it would fit in discord

also the files are a mess since I've bee trying to fix the problem so please excuse it you can

any help is greatly appreciated