I re-checked the permissions and found that the permissions-issue was only with my certs. Since i stored them in the app-root of the .deb-Installation, chown-ing of the whole folder helped as well.So nothing needs to be fixed. Thanks for your help.Mit freundlichen GrüßenHendrik HansmeierHendrik Hansmeier IT-Consulting ::: Bunsenstraße 5 ::: 51647 GummersbachFON +49 2261 814 174 ::: MOB +49 151 235 866 02 ::: E-MAIL hendrik.hansmeier@hh-it.co ::: WEB https://www.hh-it.co :::USt-IdNr.: DE311717013 ::: Finanzamt Gummersbach