Hi,
In case someone will face with this error:
[proxy_fcgi:error] (70007)The timeout specified has expired: [client 123.45.67.89:57527] AH01075: Error dispatching request to : (polling), referer:
https://yuordomain.com/someURLCreate a file like this /usr/local/apache/conf/userdata/user/yourdomain.com/proxy.conf
Replace 'user/yourdomain.com' with your virtualhost user and domain name
Add this line:
ProxyTimeout 1800
restart apache
service httpd restart
Good luck.