How can I increase the PHP memory limit in Cloud Panel if I suspect that's causing the 500 error?

You can increase the PHP memory limit in Cloud Panel by editing the `php.ini` file. Navigate to 'PHP' -> Select your PHP version -> 'Editor'. Find the `memory_limit` directive and increase its value (e.g., from 128M to 256M or 512M). Save the changes and restart the web server (Apache or Nginx) for the changes to take effect. Be mindful of server resources when increasing the limit.