Failed to read FastCGI header

Hello,

Thank you for your support.

My main website is down today and hestiaCP is loading very slow. I tried restarting the server but that didn’t help.

I checked the Apache log and found the following errors.

[Mon Jul 19 13:19:51.731906 2021] [proxy_fcgi:error] [pid 353908:tid 140303604369152] [client 114.119.147.239:0] AH01067: Failed to read FastCGI header
[Mon Jul 19 13:19:51.731961 2021] [proxy_fcgi:error] [pid 353908:tid 140303604369152] (104)Connection reset by peer: [client 114.119.147.239:0] AH01075: Error dispatching request to :
[Mon Jul 19 13:19:51.818375 2021] [proxy_fcgi:error] [pid 604834:tid 140304139630336] [client 18.185.36.38:0] AH01067: Failed to read FastCGI header
[Mon Jul 19 13:19:51.818419 2021] [proxy_fcgi:error] [pid 604834:tid 140304139630336] (104)Connection reset by peer: [client 18.185.36.38:0] AH01075: Error dispatching request to :
[Mon Jul 19 13:19:51.896664 2021] [proxy_fcgi:error] [pid 604834:tid 140303763764992] [client 54.208.40.206:0] AH01067: Failed to read FastCGI header, referer: https://dash.cloudflare.com/
[Mon Jul 19 13:19:51.896712 2021] [proxy_fcgi:error] [pid 604834:tid 140303763764992] (104)Connection reset by peer: [client 54.208.40.206:0] AH01075: Error dispatching request to : , referer: https://dash.cloudflare.com/
[Mon Jul 19 13:19:51.930974 2021] [proxy_fcgi:error] [pid 353908:tid 140304114452224] [client 2a03:b0c0:3:d0::150:5001:0] AH01067: Failed to read FastCGI header, referer: https://nuclearmed.site/wp-cron.php?doing_wp_cron=1626689958.2480390071868896484375
[Mon Jul 19 13:19:51.931002 2021] [proxy_fcgi:error] [pid 353908:tid 140304114452224] (104)Connection reset by peer: [client 2a03:b0c0:3:d0::150:5001:0] AH01075: Error dispatching request to : , referer: https://DOMAIN.COM/wp-cron.php?doing_wp_cron=1626689958.2480390071868896484375
[Mon Jul 19 13:19:51.931282 2021] [proxy_fcgi:error] [pid 353908:tid 140304122844928] [client 185.191.171.43:0] AH01067: Failed to read FastCGI header
[Mon Jul 19 13:19:51.931293 2021] [proxy_fcgi:error] [pid 353908:tid 140304122844928] (104)Connection reset by peer: [client 185.191.171.43:0] AH01075: Error dispatching request to :
[Mon Jul 19 13:19:51.931576 2021] [proxy_fcgi:error] [pid 353909:tid 140303906309888] [client 66.249.75.68:0] AH01067: Failed to read FastCGI header

I tried changing the PHP version for the website from 7.4 to 8.0 and I have disabled all the WP plugins from FTP but the site is still down and HestiaCP is very slow.

The following error happened when I change the php version to 8.0

[Mon Jul 19 13:46:54.071673 2021] [proxy:error] [pid 45855:tid 140164085040896] (2)No such file or directory: AH02454: FCGI: attempt to connect to Unix domain socket /run/php/php8.0-fpm-DOMAIM.COM.sock (*) failed
[Mon Jul 19 13:46:54.071714 2021] [proxy_fcgi:error] [pid 45855:tid 140164085040896] [client 114.119.157.26:0] AH01079: failed to make connection to backend: httpd-UDS

Can any help me fix this?

I appreciate your support.

Best regards,
Nasser

The error stopped, and my website is back online.

I am using Cloudflare Firewall Rules to secure the Login page. I disabled the Rules then the website came online after few minutes. I am not sure the problem is fixed because I enabled the rules again and the site is still online.

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