proxy_fcgi:error | The timeout specified has expired | AH01075 Error dispatching

Hi all,

I've tried googling this and had 0 luck with anything.

Here are the error logs:

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[Wed Feb 22 19:04:10.797226 2023] [proxy_fcgi:error] [pid 5226:tid 140195114481408] (70007)The timeout specified has expired: [client 162.158.2.142:41656] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-admin/edit.php?post_type=mobile
[Wed Feb 22 19:05:05.075830 2023] [proxy_fcgi:error] [pid 5226:tid 140195122874112] (70007)The timeout specified has expired: [client 162.158.2.143:17306] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-admin/edit.php?post_type=mobile
[Wed Feb 22 19:05:20.549705 2023] [proxy_fcgi:error] [pid 5227:tid 140195089303296] (70007)The timeout specified has expired: [client 172.69.62.16:46224] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-admin/admin-ajax.php?action=ai1wm_export&ai1wm_import=1
[Wed Feb 22 19:05:26.516750 2023] [proxy_fcgi:error] [pid 5227:tid 140195156444928] (70007)The timeout specified has expired: [client 162.158.2.142:16522] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-admin/edit.php?post_type=mobile
[Wed Feb 22 19:07:56.570682 2023] [proxy_fcgi:error] [pid 5227:tid 140195122874112] (70007)The timeout specified has expired: [client 162.158.2.194:63062] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-admin/edit.php?post_type=mobile
[Wed Feb 22 19:07:58.850561 2023] [proxy_fcgi:error] [pid 5226:tid 140195131266816] (70007)The timeout specified has expired: [client 162.158.2.194:63068] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-admin/edit.php?post_type=mobile
[Wed Feb 22 19:07:59.297431 2023] [proxy_fcgi:error] [pid 5226:tid 140195282851584] (70007)The timeout specified has expired: [client 162.158.2.195:51274] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-admin/edit.php?post_type=mobile
[Wed Feb 22 19:08:01.532698 2023] [proxy_fcgi:error] [pid 5227:tid 140195114481408] (70007)The timeout specified has expired: [client 172.70.38.137:37218] AH01075: Error dispatching request to : (polling)
[Wed Feb 22 19:08:20.023717 2023] [proxy_fcgi:error] [pid 5227:tid 140195181623040] (70007)The timeout specified has expired: [client 172.68.146.37:14536] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-admin/admin-ajax.php?action=ai1wm_export&ai1wm_import=1
[Wed Feb 22 19:08:31.217193 2023] [proxy_fcgi:error] [pid 5227:tid 140195064125184] (70007)The timeout specified has expired: [client 172.68.210.37:40268] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-cron.php?doing_wp_cron=1677092851.1226348876953125000000
[Wed Feb 22 19:08:44.524789 2023] [proxy_fcgi:error] [pid 5226:tid 140195181623040] (70007)The timeout specified has expired: [client 162.158.2.195:34562] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-admin/edit.php?post_type=landline
[Wed Feb 22 19:08:54.516715 2023] [proxy_fcgi:error] [pid 5226:tid 140195089303296] (70007)The timeout specified has expired: [client 162.158.2.195:15688] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-admin/edit.php?post_type=business_listings
[Wed Feb 22 19:08:55.327695 2023] [proxy_fcgi:error] [pid 5227:tid 140195089303296] (70007)The timeout specified has expired: [client 162.158.2.194:57594] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-admin/edit.php?post_type=mobile
[Wed Feb 22 19:08:55.710860 2023] [proxy_fcgi:error] [pid 5226:tid 140195072517888] (70007)The timeout specified has expired: [client 162.158.2.194:57606] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-admin/edit.php?post_type=mobile
[Wed Feb 22 19:09:17.338724 2023] [proxy_fcgi:error] [pid 5227:tid 140195266066176] (70007)The timeout specified has expired: [client 162.158.2.194:40668] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-admin/edit.php?post_type=mobile
[Wed Feb 22 19:10:55.478676 2023] [proxy_fcgi:error] [pid 5227:tid 140195055732480] (70007)The timeout specified has expired: [client 162.158.2.142:14980] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-admin/edit.php?post_type=business_listings
[Wed Feb 22 19:10:55.529674 2023] [proxy_fcgi:error] [pid 5227:tid 140195047339776] (70007)The timeout specified has expired: [client 162.158.2.143:43260] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-admin/edit.php?post_type=mobile
[Wed Feb 22 19:10:56.517813 2023] [proxy_fcgi:error] [pid 5330:tid 140195106088704] (70007)The timeout specified has expired: [client 162.158.2.143:56790] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-admin/edit.php?post_type=mobile
[Wed Feb 22 19:11:00.506680 2023] [proxy_fcgi:error] [pid 5227:tid 140195072517888] (70007)The timeout specified has expired: [client 162.158.2.142:47564] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-admin/edit.php?post_type=landline
[Wed Feb 22 19:11:38.359023 2023] [proxy_fcgi:error] [pid 5227:tid 140195080910592] (70007)The timeout specified has expired: [client 172.68.146.58:15386] AH01075: Error dispatching request to : (polling), referer: https://whocalled.au/wp-cron.php?doing_wp_cron=1677093038.0755450725555419921875
Cannot resolve the timeout issues (504 errors).

I've tried changing the apache timeout. It only affects the front end of the website, not the back end (unless I am searching for something).

I've got this happening on two sites, two fresh CWP installs on new fresh Linode instances.

I am running Apache with PHP 8.0.x as the FPM set version. The memory limit, execution timeout etc are all very high, so I don't believe its that.

I've looked at https://stackoverflow.com/questions/33375823/apache-proxfy-fcgi-error-dispatching-request-to but anything like changing the http.conf file and the timeout just breaks apache!

Any help would be great.

Look at tuning options available in the PHP FPM user config file for that account:

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/opt/alt/php-fpm80/usr/etc/php-fpm.d/users/user.confI'm using nginx instead of Apache, but I did have to apply some Fast CGI buffer tuning in its configuration when I was seeing some timeouts:

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        fastcgi_buffers 16 16k;
        fastcgi_buffer_size 32k;