Streamlit unresponsive from secure server

Hi there,

I’ve been happily using streamlit until we used a secure server…
Now the tool can take half an hour loading showing only this:

Or sometimes loading only partially with some widgets hanging on “loading” state and never showing up. I’ve tried rebooting, reloading, reloading cache, nothing works.

Weirdly, the problem is systematic with Chrome, while only occasional with Firefox…

Here is the server config:
server {
listen 80;
keepalive_timeout 5;
real_ip_header X-Forwarded-For;
location / {
location /stream {
proxy_http_version 1.1;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $host;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection “upgrade”;
proxy_read_timeout 86400;

Any suggestion to resolve this ?
Thanks a lot !

Is there any way to have a log of what streamlit does (or not) on the server ?