Websockets behind apache and nginx proxy, connection not upgrade

Hi! I have a problem. Apache listens on a white ip and proxies all requests /ssd on nginx that proxies requests /city-dashboard to another server with websockets. In apache config:

ProxyPass /ssd/ http://10.127.32.24
ProxyPassReverse /ssd/ http://10.127.32.24
nginx config: on nginx.conf:

map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}
include /etc/nginx/conf.d/*.conf;
on default.conf

location /city-dashboard/stream {
proxy_pass http://10.127.32.24:5000/stream;
proxy_set_header Host $host;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
}
Request headers:

Connection: Upgrade
Upgrade: Websocket
Response headers:

Connection: close
Status Code 400 Bad Request
what am I doing wrong?