Uploading code that contains library requirement

That is not how it was meant. You created a loop and you are lucky the universe did not explode :-)

Whoops, yeah it's like chained #include in C/C++

Ok now just uploading the Layout.min.js solved the issue and the program works as intended. Now the only thing that remains to try is to find a way to automatically upload the file to a BangleJS (or embedding the Layout library in the script, even if it's kind of ugly).

Thanks for the patience!
Best regards