Error message

• Warning: file_exists(): open_basedir restriction in effect. File(/var/www/vhosts/www.psy.auth.gr/datadir/simplesamlphp) is not within the allowed path(s): (/var/www/vhosts/old.psy.auth.gr/httpdocs:/var/www/vhosts/old.psy.auth.gr/tmp/:/tmp/:/var/www/vhosts/old.psy.auth.gr/datadir) in _simplesamlphp_auth_isEnabled() (line 698 of /var/www/vhosts/old.psy.auth.gr/httpdocs/sites/all/modules/simplesamlphp_auth/simplesamlphp_auth.module).
• Warning: file_exists(): open_basedir restriction in effect. File(/var/www/vhosts/www.psy.auth.gr/datadir/simplesamlphp) is not within the allowed path(s): (/var/www/vhosts/old.psy.auth.gr/httpdocs:/var/www/vhosts/old.psy.auth.gr/tmp/:/tmp/:/var/www/vhosts/old.psy.auth.gr/datadir) in _simplesamlphp_auth_isEnabled() (line 698 of /var/www/vhosts/old.psy.auth.gr/httpdocs/sites/all/modules/simplesamlphp_auth/simplesamlphp_auth.module).