Second http server

Hello, I want to use a second nextcloud server. the database is a mysql master-master replicated.
I copied the nextcloud files from the first server. On the second, i have a internal server error.

The two servers are in the trusted_server array in config.php.

How can i mount two web servers ?

The two servers have the same config.

You might wanna have a look at

Thank you for your return, but i want to try without load balancer, i just want to be able to use two differents servers using the same mysql database in master-master mode (database synchronisation is functionning)