Error during case creation

Autopsy is a new service for me. This is my first installation (latest version of Autopsy, host: Ubuntu 18.04-2).
When creating a case, after the DB creation screen, an error message is displayed. And since I can’t find any information about it in this Forum or on the net, I’m asking you to try to find a solution.
Here is the error message:


Thank you for your advice and help

I’m not sure I’ve ever seen that before either. Did you build from source on Linux or the .zip file from the website?

Yes, I have downloaded the latest versions published including the ZIP file. The installation was carried out according to the instructions