Cannot create a Global Template - a lot of JS errors in console

Question

Hello there. Few days ago I've migrated from Windows Server and IIS to Linux Server and Nginx reverse proxy. Everything works great excluding one function. I can't create a global templates. When I am creating it, there are a lot of JS errors in the console. Bypassing proxy gives the same results.

What can I do if it is a clean installation of Confluence?

I am using a Ubunutu 16.04 LTS Server with NGINX SSL Reverse Proxy. I can upload my server.xml and nginx virtual host configuration.

EDIT: I've noticed in Google Chrome browser I have that error:

Maybe it helps...

EDIT2: Problem is solved. Before migration to Linux, all of my Atlassian apps was hosted on Windows Server Machine. I noticed a encoding characters issues between JIRA and Confluence, so I've changed the Confluence encodign to windows-1250. Now on Linux this encoding is wrong. After back to the UTF-8 encoding, there is no JS error in console and everything works good :)

mkilinski · Accepted Answer

Problem is solved. Before migration to Linux, all of my Atlassian apps was hosted on Windows Server Machine. I noticed a encoding characters issues between JIRA and Confluence, so I've changed the Confluence encodign to windows-1250. Now on Linux this encoding is wrong. After back to the UTF-8 encoding, there is no JS error in console and everything works good :)