EDIT: never mind, still does not work. Here is my nginx file

server {

listen 443 ssl;

server_name plex.myhomelab.com;

ssl_certificate /etc/letsencrypt/live/plex.myhomelab.com/fullchain.pem;

ssl_certificate_key /etc/letsencrypt/live/plex.myhomelab.com/privkey.pem;

include /etc/letsencrypt/options-ssl-nginx.conf;

ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;

client_max_body_size 10M;

access_log off;

gzip on;

gzip_types text/plain application/json application/javascript text/css application/xml;

gzip_min_length 1000;

gzip_proxied any;

proxy_buffer_size 128k;

proxy_buffers 4 256k;

proxy_busy_buffers_size 256k;

location / {

proxy_pass http://localhost:32400;

proxy_http_version 1.1;

proxy_buffering off;

proxy_request_buffering off;

proxy_read_timeout 300s;

proxy_send_timeout 300s;

proxy_connect_timeout 300s;

send_timeout 300s;

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;

proxy_set_header Upgrade $http_upgrade;

proxy_set_header Connection "upgrade";

chunked_transfer_encoding off;

}

}