- Plesk 12.5 for Linux
- Plesk Onyx for Linux
The following error appears in domain's error log:
CONFIG_TEXT: [proxy_fcgi:error] [pid 22813] [client 203.0.113.2:34554] AH01068: Got bogus version 111, referer: https://one.example.com/tickets/view/80634/
[proxy_fcgi:error] [pid 22813] (22)Invalid argument: [client 203.0.113.2:34554] AH01075: Error dispatching request to : (passing brigade to output filters), referer: https://example.com/
There is no impact on a domain and it works fine. The issue is with only error reporting.
This is confirmed Apache bug reported by the following link: AH01075: Error dispatching request to : (passing brigade to output filters)
When a client disconnects before loading the page completely, the connection between main Apache process and mod_proxy_fcgi is closed and mod_proxy_fcgi writes to log about not being able to send data to the main process.
There is no workaround available at the moment, but there is no impact. The bug was fixed in Apache 2.4.16 version.