Permission denied when loading pages on a virtual host, what should I do?

Question

Apache HTTP Server

I put the site on a virtual host, when loading any page, errors appear at the top:

In the config I wrote:

<VirtualHost 127.0.0.10:80>
  ServerName arkston.conf
  ServerAlias www.arkston.conf
  DocumentRoot /var/www/arkston/

  Include /etc/phpmyadmin/apache.conf

  <Directory /var/www/arkston/>
  	 	Order allow,deny
   		Allow from all
   		Require all granted
  </Directory>
  
</VirtualHost>

Gave permission to the folder:

sudo chmod -R 755 /var/www/arkston/

Nothing helps. How to be?
ps site on opencart.

Answer 1

Answer 2

Go to the cache folder, see who is the owner of the files and what rights they have, compare with the user on whose behalf the web server is running (by default this is www-data).