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I see several lines of the following error in the error log file of my Web Server. I am using Apache + Nginx (reverse proxy) + PHP-FPM.

The timeout specified has expired: [client xx.xx.xx.xx:xxxx] AH01075: Error dispatching request to : (polling)

How to fix this error. 

1 Answer

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If you can access httpd.conf or apache2.conf (depending on your system), set the value of Timeout to a larger value.

Timeout 300

If you are using CentOS Web Panel (CWP), you need to modifiy the following file to set Timeout to a large value:

After updating the file, restart Apache.