If you look at the picture, Darklua sees the path require with the extension set as the path with the extension set explicitly and does not set the .luau extension. Also the path require with the extension set explicitly is not supported in the latest Luau(ex. require("path/to/module.luau")). So Darklua must watch for it by inserting the .luau extension, but the problem is, since the extension is already set, Darklua searches for the file itself(ex. Darklua tries Error.global instead of Error.global.luau)

A workaround is to bundle it by replacing the extension with something else (e.g. underscore) instead of using dot inside of the path require.