I'm creating my first app with Shopify. I'm doing exactly as recommended by Shopify, but I'm getting the following error when testing the app in the test store.
Oauth error invalid_request: Could not find Shopify API application with api_key '31715c41688764942236bdac250995de'
No error is returned in the terminal, everything is running perfectly. I've already removed the quotes from SHOPIFY_API_KEY, but nothing seems to have an effect.