help to migrate an application from old version 1.8.20 to newest compatible in other server

I´m actually above to move my applications from one VS to a new deddicated one but i have an ELGG 1.8.20 application that wasn´t moved transparently by CPanel backup and transfer utility. All environment is identicall but i get errors in home page. Web site is not working, error i screen is 

Error Fatal

Se ha encontrado un error fatal al ingresar. Contacte al administrador con la siguiente información:

Exception #1693243905.

i need some expert to enable this app en new server.

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