While executing the init task (./symfony framework:init DSN) the following error message appears:
Fatal error: Call to undefined function sg_load() in /var/www/vhosts/meinedomain.com/httpdocs/config/ProjectConfiguration.class.php on line 2
Check if the SourceGuardian PHP extension is installed. It is required for the Community and Professional version of VIMP.
Further information about the SourceGuardian extension can be found here (including a link to the install guide).