Thank you.
I followed the guide to build the Discource.
However, the reverse proxy in Apache is not working properly.
ProxyPass / ws://var/discourse/shared/standalone/nginx.http.sock
ProxyPassReverse / ws://var/discourse/shared/standalone/nginx.http.sock
Error
No protocol handler was valid for the URL /favicon.ico (scheme 'ws'). If you are using a DSO version of mod_proxy, make sure the proxy submodules are included in the configuration using LoadModule.,