@Michael Zullsdorff

but it's on goblue
https://prnt.sc/l-caLkkVZnbH

Where i need to put new theme u gave me ?

Your site seems to load the outdated incompatible Black Theme
https://www.opensource-socialnetwork.org/component/view/2396/black-theme

Use phpmyadmin or any other database tool of your choice,
enter the table Ossn_site_settings,
and change the value of the first row from goblack to goblue

yes, i just follow the instructions here
https://www.opensource-socialnetwork.org/wiki/view/708/how-to-upgrade-ossn
and saw "successfully updated"
https://prnt.sc/fuydr2tnyQ01

Looks like you are still using old files? Did you deleted all old files and replaced it with new one? I am sure you are using old files like theme etc. So the fault is at your end. Delete all old files and old components from the files and replace with new one

i change php version to 8.0
now the error @aslan said is fixed
but still loading
aaand also i need ur country to make exceptions

Search for error_log file in root of OSSN and search for #1697276776|D39F43D1168CB3A9EA82B3888F458AEE because your website now giving this error

But this is not the correct page

here is it
https://rocknmetalbulgaria.eu/rockbook/
if u are blocked again please tell ur country to make exceptions

All I get is a "Sorry, you've been blocked" page at
https://rocknmetalbulgaria.eu/

i tried on Incognito mod in google chrom browser buuut stil only loading
https://prnt.sc/cfHEs0eXT4iA

for the update i follow the instructions
https://www.opensource-socialnetwork.org/wiki/view/708/how-to-upgrade-ossn