Vimbadmin Error on clean install

Did sudo ee stack install --all

Reload : postfix [OK] Reload : nginx [OK] Restart : php5.6-fpm[OK] Reload : mysql [OK] Restart : dovecot [OK] Reload : postfix [OK] Restart : dovecot [OK] Reload : nginx [OK] Reload : php5.6-fpm[OK] Reload : nginx [OK] Removing /var/www/roundcubemail/htdocs/installer [Done] HTTP Auth User Name: easyengine HTTP Auth Password : Borlde Configure ViMbAdmin: Security Salt: ****** Successfully installed packages

Opened IP:22222/vimbadmin/public/

Logged in with thouse credentials. Created new user. Logged with new user. Working somekind of email system?? But also showing error. Warning: fopen( failed to open stream: HTTP request failed! HTTP/1.0 500 Internal Server Error in /var/www/22222/htdocs/vimbadmin/library/ViMbAdmin/Version.php on line 95