I'm trying to follow the tutorial to develop a post-purchase checkout extension, which can be found here: https://shopify.dev/apps/checkout/post-purchase/getting-started-post-purchase-extension.
However, I'm running into an error on step 2 and can't figure out what's going wrong. If anyone could help me understand what's going on I'd really appreciate the help thanks. Sorry if this is trivial, I'm relatively new to shopify development.
The error is when I run 'shopify extension serve' in the terminal. I've attached an image of the error I'm getting. Thanks.