The problem with the first mod.

I made my mod based on a year-old tutorial that adds only 1 item that does nothing but exist. I made it using "vscode", with the extension "emmylua", but many variables are considered errors, for example "MakeInventoryPhysics, Asset". When launching the mod with caves, it gives the error "Dedicated Server Failed To Start", but at the same time the world is normal. The mod itself is still local, the code is written correctly, according to the tutorial. I tried to update Windows, and added dst to security, nothing helped.