Download Restituded Orbit Files automatically

When running the command "mvn package assembly:assembly’
in the master branch of s1tbx we receive always an error, identical to what has been posted in Snap-desktop build failure.

The command “mvn clean” does not solve this error.

Do you have any suggestions on how to overcome this error and generate a s1tbx package (just a folder with the UNIX binaries)?
We do not need to generate an installer.

Thank you in advance.