System repair developed in cake php

I have a system that was developed in cake php, the system worked fine, we migrated it from server and in the new server it does not work, there must be a loading problem, php versions, database, there may be different factors, I need to see if someone can repair it.

the system consists of custom pages using subdomains

Home:
muestra.personalika.com

Admin:
muestra.personalika.com/cms