B4J Tutorial Linux video to learn it in order to create successfully your Linux versions of your apps (Ubuntu works - Debian not)

Recently I faced for the first time the task of creating a Linux version of my B4J app. The packager created successfully the build folder but I was not able to see my app running. The error - I don't know if it is general - was that I was using in VirtualBox Debian 10.4.0. There might be something that bothers it either in the creation of the virtual machine or with the installation. I installed Ubuntu 20.04 LTS in a new VirtualBox machine and it ran like a charm. If you are like me and have nothing to do with Linux then the following video will be very useful to you:

 
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