[proxy_fcgi:error](70007)The timeout specified has expired

Add the following lines into httpd.conf or apache2.conf (depending on your system) file:

Timeout 600
ProxyTimeout 600

and restart apache

sudo /etc/init.d/apache2 restart

OR

For the latest versions of httpd and mod_proxy_fcgi you can simply add timeout= to the end of the ProxyPassMatch line, e.g.:

ProxyPassMatch ^/(.+\.php.*)$ fcgi://127.0.0.1:9000/<docroot>/$1 timeout=1800

For older versions it was a little more complicated, e.g.:

<Proxy fcgi://127.0.0.1:9000>
  ProxySet timeout=1800
</Proxy>
ProxyPassMatch ^/(.+\.php.*)$ fcgi://127.0.0.1:9000/<docroot>/$1