Solidres give me Error 500

Hi,
On www.eleanorgarden.com/, Until a few days ago, solidres worked. Today, if I try to book, at the last screen returns "500 error".

In the backend tehre is the request but no email arrives to those who book.

Why?
Can you help me?
regards,
Auriol

Hi,

Please raise the error reporting in Joomla Global Configuration and send us the detailed error message for further debugging.

Regards,