There’s some bugs in Acorn with Windows right now. You’ll need to use a WSL-based dev environment for the moment.
Work in progress to get things fixed: 🩹 Use `DIRECTORY_SEPARATOR` for fallback storage path by Log1x · Pull Request #441 · roots/acorn · GitHub — this isn’t working 100% just yet
Make sure to read https://discourse.roots.io/t/how-to-best-ask-questions-on-this-forum/24582 and put in some more effort with your posts (more details, proper formatting, versions of everything)