This error shows up when the Airtable integration has been disconnected from miniExtensions. Here are the steps to restore the integration:
Click the hyperlink to revoke the Airtable integration.
The button to connect miniExtensions Workspace to Airtable will become available. Click this button and grant access to the Airtable bases that need to work with.
This will bring back the integration between miniExtensions and Airtable. In case, you forgot to include some bases during re-authentication, you can follow this article.