After updating Plesk from 12.5.30 #15 to #18 (which also updated PHP 7.0 to 7.0.1), all the WordPress websites hosted on the server are displaying a 500 error.
The logs are similar in all the situations
2016-01-05 10:42:20 Error 86.124.185.88 Premature end of script headers: index.php Apache error
2016-01-05 10:42:20 Warning 86.124.185.88 (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server, referer: http://www.domain.com/ Apache error
Any thoughts about this? Everything was working fine on PHP 7.0
The logs are similar in all the situations
2016-01-05 10:42:20 Error 86.124.185.88 Premature end of script headers: index.php Apache error
2016-01-05 10:42:20 Warning 86.124.185.88 (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server, referer: http://www.domain.com/ Apache error
Any thoughts about this? Everything was working fine on PHP 7.0