Since @Italo experiences this with a new project however, I have to ask is it old or new
What to check, download you aia, open it with 7-zip or equivalent program
Check that you have only kodular folder, if you have ex. makeroid then move all files from it to kodular and delete makeroid folder
Go to \youngandroidproject\ folder and open project.properties.xml, check that it contains io.kodular as in the folder structure above, if not change it
As I mentioned the big post