suiteCRM version 7.9.17 I can not add leads

Hi, I installed the CRM package on my server without problems, but when I try to add a potential client, the system fails.

When I perform the recharge, the registered potential client appears but without their email and I can not add it either.

I have version 7.0 of php, but it shows an error of 500 when I try to add a potential client, what extensions I need to add in my php.

That would be my problem?