Module not found: Error: Can't resolve 'controllers'

Hello, I’m following the setup on the hotwired/stimulus-rails repo page and having an issue installing it with importmap. I’ve followed the instructions, but I’m currently getting Module not found: Error: Can't resolve 'controllers' Did you mean './controllers'?.

Im running it through ./bin/dev and in my Procfile.dev is:

web: bin/rails server -p 3000
css: bin/rails tailwindcss:watch && bin/rails spina:tailwind:watch
js: yarn build --watch

Has anyone come across this before?