@yannick_hein what OS are you using, looking at a few post above seems like your on Ubuntu? If so, you may want to start a new topic as this one has been marked solved. In the new topic please add your OS and version of OH to be installed. I’m sure someone in the forum that is more familiar with Ubuntu can help.
Here is also a link that you may find helpful. Initial setup failed on RasPi3B+ due to a Java - Zulu path error - #7 by 4est