Prestashop Fatal error: Uncaught Error: Call to undefined function mcrypt_encrypt()

This can be fixed – The hotspot is located in the in /var/www/html/public_html/classes/Rijndael.php:51

Function mcrypt_encrypt() is deprecated in /classes/Rijndael.php on line 51

UPDATE `ps_configuration` SET `value` = '0' WHERE `name` = 'PS_CIPHER_ALGORITHM';