How can the issue of server error 500 be resolved when accessing pages in a PHP-based shop system?

To resolve the issue of server error 500 when accessing pages in a PHP-based shop system, you can try increasing the memory limit in your PHP configuration file. This can be done by editing the php.ini file and increasing the memory_limit parameter to a higher value, such as 256M.

// Increase memory limit in php.ini file
ini_set('memory_limit', '256M');