Suspended sentence for man who stabbed student in Dudelange

How is it even possible, for attempted murder only 4-year suspended sentence?

https://today.rtl.lu/news/luxembourg/a/2280736.html

A 21-year-old Syrian national, who stabbed a student in the leg and hand with a knife in January 2023, has been sentenced by the Luxembourg City Court.

The court handed down a fully suspended four-year prison sentence, conditional on the defendant completing therapy over the next five years and either entering vocational training or securing employment. Prosecutors had initially sought a 15-year prison term.