Adding new modules doesn't work #2

Hi! I am trying to add new module and import it in `Main` module but I get the following error ``` ERROR in ./content/src/Main.elm Module build failed: Error: Compiler process exited with error Compilation failed I cannot find module 'Types'. Module 'Main' is trying to import it. Potential problems could be: * Misspelled the module name * Need to add a source directory or new dependency to elm-package.json ``` My file structure + content + src - Main.elm - Types.elm ...