+1 - all of a sudden our prod deploy, with no API key or handle changes* stopped working with the same error:
ERROR Token authentication failed: Shopify userTokenVerify error: [{‘message’: ‘Invalid Mini’, ‘code’: ‘INVALID_MINI’}]
It also happens with a fresh handle and API key from npx shop-minis setup.
*handles are tied to the API keys and cannot be changed or you’ll also get this same error! Changed handle in manifest - #6 by Shane_Stratton
Maybe a duplicate of: