HTTP ERROR 500, it's already the third time

Hello guys !

I have this problem with HTTP ERROR 500, it is already the third time I install LibreNMS and when running:

su - librenms
git pull

it stops connecting to the LibreNMS GUI, I have already performed numerous procedures, but none solves the problem. Someone could give me a hand, if I don’t have to go back to zabbix again.

Thank you in advance for your attention.

please post the output of ./validate.php

Check php versions and configuration on the webserver, is there any related information in the web server logs or librenms logs (/opt/librenms/logs)?