I found this error when i hit F12 on the page.
Firefox can't establish a connection to the server at wss://foundry.web.address/socket.io/?session=blahblah=3&transport=websocket.
My SWAG nginx file.
server {
listen 443 ssl;
listen [::]:443 ssl;
server_name foundry.*;
include /config/nginx/ssl.conf;
add_header Referrer-Policy "same-origin" always;
#add_header Access-Control-Allow-Origin https://foundryvtt.fithwum.tech always;
client_max_body_size 2048M;
fastcgi_buffers 64 4K;
#enable for ldap auth, fill in ldap details in ldap.conf
#include /config/nginx/ldap.conf;
location / {
#enable the next two lines for http auth
#auth_basic "Restricted";
#auth_basic_user_file /config/nginx/.htpasswd;
#enable the next two lines for ldap auth
#auth_request /auth;
#error_page 401 =200 /login;
# Set proxy headers
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
# These are important to support WebSockets
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "Upgrade";
include /config/nginx/proxy.conf;
resolver 127.0.0.11 valid=30s;
set $upstream_app foundry;
set $upstream_port 30000;
proxy_max_temp_file_size 2048m;
set $upstream_proto http;
proxy_pass $upstream_proto://$upstream_app:$upstream_port;
}
}
Looks like a websocket error.