500 internal server error

So my website crashed because of a failed auto-update through webmin/virtualmin (it caused a kernel panic). I have accessed the server to rescue all the files and databases etc. This is a VPS server.

I managed to reinstall the server, reupload the content and databases and almost everything seems to work, except for the website. I gain access to my mail. I can access a basic html website, home directory is setup etc.

I think there is a problem with PHP. The website should run on PHP 7.1, but this is shown in the error logs.

mod_fcgid: can't apply process slot for /home/website/fcgi-bin/php7.0.fcgi

from httpd/access_log ::1 - - [14/Dec/2017:14:55:01 +0100] "OPTIONS * HTTP/1.0" 200 - "-" "Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips mod_fcgid/2.3.9 PHP/5.4.16 (internal dummy connection)"

from httpd/error_log

[Thu Dec 14 14:55:59.623278 2017] [mpm_prefork:notice] [pid 3212] AH00163: Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips mod_fcgid/2.3.9 PHP/5.4.16 configured -- resuming normal operations [Thu Dec 14 14:55:59.623329 2017] [core:notice] [pid 3212] AH00094: Command line: '/usr/sbin/httpd -D FOREGROUND'

It would be great if someone can fix this with me, I am spending a long time now to solve this. :( If you need any other information, please let me know which and where I could find it.