Error Trying to Connect

I am attempting to set up my ONLYOFFICE server settings within my NextCloud.

Whenever I try to put in the address of my server, I get a 404 error:

Hello @mhollander ,
You have entered a wrong ONLYOFFICE Docs address. You have to enter a URL which brings you to your ONLYOFFICE Docs, not Nextcloud.

If you have not installed ONLYOFFICE Docs yet, please go to this page - Installation Guides - Docs - ONLYOFFICE