I am building a public app(Nodejs), trying to query and mutate data with Storefront API. When I authenticated, I got an error: "App must have a channel record to create a storefront access token". I tried setting this app to turn into a sale channel on Shopify Partners -> App setup -> Sales Channel. However, the part shows "
Your app is not eligible to become a sales channel, Your app has one or more installs. It cannot be turned into a sales channel."
Anyone could help or tell me how to solve the problem? I appreciate it if you could help!