[Solved] i fixed the problem seems like a few of the apache modules had been removed. ran apt-get install apache2 apache2-suexec...
yes i did install php7 and it was working fine for the last few month, it stopped [admin logon] a few days back after an apt-get update / upgrade...
tired to log into the admin section on port 8080 and i get a certificate warning then goes to a error 500 page. updated ispconfig to 3.1.2...
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