Running neuroglancer behind nginx with another server

Hello all i am trying to run 2 servers behind nginx, one is neuroglancer and one is a custom server that we made.
here is the config

`server {
listen 443 ssl;
server_name localhost;

ssl_certificate certs;
ssl_certificate_key keys;

ssl_session_cache shared:SSL:1m;
ssl_session_timeout 5m;

ssl_ciphers HIGH:!aNULL:!MD5;
ssl_prefer_server_ciphers on;

location / {
proxy_pass http://127.0.0.1:8080;
}
location /neuroglancer/ {
proxy_pass http://127.0.0.1:5000;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
}
}
include servers/*;
}
`
the location of /neuroglancer/ does not seem to work,
this is what i get in the console

and it is just a white screen. Is it possible to proxy to neuroglancer along with another server?