If you're getting any 5xx error code, it means that Airtable is experiencing downtime at the moment. Unfortunately, we have no control over this. Check out this page to track the issue status https://twitter.com/airtablestatus
Also, you can sign up here to receive real-time notifications: https://status.airtable.com/
Here are some other potential Airtable errors you might see:
The server encountered an unexpected condition.
Airtable's servers are restarting or an unexpected outage is in progress.
The server could not process your request in time. The server could be temporarily unavailable, or it could have timed out processing your request.
Other error messages you may get sometimes:
503 - undefined
<html><title>Error 500 (Internal Server Error)!</title></html>
The string did not match the expected pattern.
The service is temporarily unavailable. Please retry shortly.