Init Problem: 403 Error - N8N, Nginx Proxy Manager, and Docker

Today I installed n8n on a Ubuntu 20.04 host running Docker. I have a domain with an A record that points to my local Nginx reverse proxy server. I want to reverse proxy to my internal server 192.168.1.21 (the Ubuntu box running docker). I am able use n8n locally at http://192.168.1.21:5678 however when I try to use my domain to get to my n8n instance I get the following 403 error:

Error

Here are the environment variables I used in docker:

Here are my Nginx proxy details:
n8n Proxy Host Details

I’m wondering if anyone has some ideas on what a possible cause is or if you have run into this issue before and what you did to fix it.

I’m still fairly green when it comes to linux, docker, and nginx so I am sure I am missing something.

I sincerely appreciate any help!

One other thing to note, when I try to add a node, I just get a spinning circle with the word loading under it.

Thanks all!

I just tried accessing my n8n.domain.com site from another computer and it works. The computer I was originally accessing it from is my work computer and it has McAfee UCE on it and I think it is blocking certain traffic. :unamused: