This error may appear if you changed or updated the Airtable API Key linked to your Bannerbear account, but not the Airtable base / table integration.
You can use the Reset button, shown above, to update the base ID and table name.
If you have multiple Airtable accounts, it's best to always update both the Airtable API key and base/table linked in your Bannerbear account before importing.
Check out Where do I find my Airtable base id? for more info on obtaining your base ID.
If that doesn't do the trick, don't hesitate to contact our Customer Support ↗.