Not sure if this is the right place to report this. There seems to be an inconsistency in the version of lejos-commons used between the different repositories. The script in this repository installs 0.7.2 on the brick, but e.g., the gradle wrapper provided in projects such as temple_project_gradle and examples generate jar files with 0.7.3 in their classpath (in the MANIFEST.MF). So when just following the examples on the web page, the code will not run on the brick, but instead give a ClassNotFoundException for the lejos classes.