Hello,
aapanel installed on Ubuntu 20.04. webserver Nginx 1.22, php ver 8.0.

I am facing an issue suddenly from today when i create any website on the server it gets created without any error, but when i try to access the website then on the browser website is accessible and it gives an error.

website gets created without any error as below shown in screen shot

browser output as below

yet just simple website with out even SSL not able to work..
When i try to crate website with ApplySSL website gets created but SSL letsencrypt not installed. it gives errors.
please help