Fix error handling in Server.php
Fix error handling in Server.php

according to http://php.net/manual/de/exception.getmessage.php , the parenthesis are required
FloatingGhost/MISP,MISP/MISP,MISP/MISP,Rafiot/MISP,FIRSTdotorg/MISP,SteveClement/MISP,FloatingGhost/MISP,SteveClement/MISP,MISP/MISP,SteveClement/MISP,FIRSTdotorg/MISP,Rafiot/MISP,FIRSTdotorg/MISP,FloatingGhost/MISP,MISP/MISP,Rafiot/MISP,Rafiot/MISP,SteveClement/MISP,MISP/MISP,FloatingGhost/MISP,SteveClement/MISP,FIRSTdotorg/MISP