Sentora panel not loading after reboot

[Declan1]

A 500 error on the Sentora panel after reboot is often due to PHP/MySQL compatibility. Sentora 1.0.3 is quite old and not fully compatible with PHP 7.4/MySQL 5.7, since it still calls deprecated MySQL functions.
Options:

1. Downgrade PHP — Sentora 1.0.3 works best with PHP 5.6–7.2.
   
2. Check logs — Look in
   
   Code:

   /var/log/httpd/error_log
   or
   
   Code:

   /var/log/apache2/error.log
   for exact PHP errors.
   
3. Consider upgrade/migration — Sentora hasn’t had major updates in years. Many users migrate to forks like Sentora CE, Froxlor, or Virtualmin which support modern PHP.
   
4. Temporary fix — If you must stay with 1.0.3, install a compatible PHP version via Remi repo and set Apache to use that.
   

Your sites work because they don’t use the outdated functions, but the panel does. Downgrading PHP (or moving to a newer panel) will restore access.