Neo4j-admin - no JVMs

When I'm trying to dump the database vie the neo4j-admin shell, after opening the shell it tells me:

Unable to find any JVMs matching version "1.8".
No Java runtime present, try --request to install.

After that it logs out again. The latest version of Java (I guess 221) is installed on my computer.

What's going wrong here?

Thank you, JJJ

The latest version of Java (I guess 221)
????

what does java -version report.
What version of Neo4j is installed?

Sorry, I just wanted to express that Java has been installed.

I have installed the latest version of neo4j Desktop 1.2.1.

Thank you,

JJJ

so problem resolved?

No, unfortunately not.

Thanks for any recommendation what to try.

JJJ

After having searched the internet I found that this seems to be a very common issue, but anyway I couldn't find a proper solution for the problem.

To be honest: it seems very strange to me that for saving the database I have to fiddle around with the terminal shell. There should be a function included in the Neo4j Desktop to export / backup a database to a certain location.

JJJ