Hi, when choosing the category for a topic please try to have a look at the category description for each category first:
The current used category is/was https://community.greenbone.net/c/gce (Description: About the Community Edition (GCE) category) which is about the downloadable ready-to use virtual machine.
Based on your posted issue it sees you have an own installation either build from source or installed via 3rdparty repositories. For such installations the https://community.greenbone.net/c/gse (Description: About the Source Edition (GSE) category) needs to be chosen.
I have moved the topic to the correct category for now. It could be possible that the info above is made more prominent / easier to find in the future.