make roundcube email on a server (Debian 7) work with plesk

hey folks, i did an update with plesk from V11 to V17.5.3. after this the roundcube email module: [login to view URL] did not work anymore. All Emailadresses still work and everything is still fine. I need someone who has very good experience in setting up servers and finding errors and fixing them. Also I am looking for someone who is able to track changes in a good way for a good documentation what work has been done. looking forward to hear from you, please provide a sample of how you track changes on what you have been done on other projects. Greetings, Arno