Airtable - "There was a problem fetching the data, please check your input and try again."

I just create a new app in Thunkable. Twice I’ve connected my Airtable base. However, any time I got into Data → Data Sources and click on the base, I get the following error:

There was a problem fetching the data, please check your input and try again.

I’ve disconnected and reconnect the base and I have the same issue. The pop up shows the correct tables in the base, but won’t show the data.

Can you show us the data source blocks you’re using to connect with Airtable?

This error can sometimes happen if you are exceeding the API call limits. If your app is calling the Airtable API (which is what accessing the data source is doing underneath the hood) too often and too quickly, this can result in an error similar to what you are describing.
Getting started with Airtable's Web API | Airtable Support.

Airtable enforces a rate limit of 5 requests per second (per base) to ensure optimal user performance across all pricing tiers.

https://support.airtable.com/docs/managing-api-call-limits-in-airtable