http error 500

Greetings to all.

I installed xerte on my news website and it looks like this:

portalnews.co/xerte/management.php

I can access the administrative area and my logged in users and the form where the projects are, however, when I enter to work with the content creation form, it shows the following:

http error 500

The following is the link that generates the error when entering the content creation form:

xerte/edithtml.php?template_id=4

Could you please help me solve this situation, thank you.

You are probably missing a php extension. Please set $development to true on line 43 of config.php, and then after letting the error 500 happen again look in the apache2 error log for the cause of the error.

Kind regards Tom and thanks for your reply.
Since I couldn't solve the problem, I decided to reinstall the tool from scratch and it works correctly now, thank goodness I didn't have any material.
In any case, thank you very much for your kind collaboration.