Hi @bdossul,

Most probably you have a misconfiguration in your Nginx configurations configuration file. In order to catch the exact error you’ll need to check your Nginx’s error log. The file is located here :

/var/log/nginx/error.log

You can use the following command to actually check int

tail -n 100 /var/log/nginx/error.log

In there once you see the error you’ll know where to start troubleshooting from. If you are still uncertain, I’ll recommend checking out the following article about configuring Nginx server blocks

https://www.digitalocean.com/community/tutorials/how-to-set-up-nginx-server-blocks-virtual-hosts-on-ubuntu-16-04

If you are still unsure after reading it and testing some stuff, post the error here and we’ll try to assist you.

Regards,
KDSys