SSL with proxy Server - error after Login

[kmsrockz]

Hello everyone,

I have a question about the connection to the chatbot UI via SLL.

I have set up a proxy server with the following config.

server {
listen 80;
server_name chat.domain.com;

location / {
proxy_pass http://IPADRESS:3000;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
}
}

server {
listen 443 ssl;
server_name chat.domain.com;

ssl_certificate /etc/ssl/certs/cert.crt;
ssl_certificate_key /etc/ssl/certs/key.key;

location / {
proxy_pass http://IPADRESS:3000;
# ...
}
}

Conenction, https and http works with that.

If I go to the chatbot server via port 80, login and chat works without problems.

As soon as I connect to the server via https://domain:443 (SSL) I get the following error message by login with user credentials.

x-forwarded-host header with value IPADRESS:3000 does not match origin header with value chat.domain.com from a forwarded Server Actions request. Aborting the action.
⨯ Error: Invalid Server Actions request.
at AsyncLocalStorage.run (node:async_hooks:346:14)

What else needs to be adjusted in the config so that I can access the server via a proxy via SSL?

Very grateful for any advice 🙏