There must be a bug in the recent update. Last week I noticed a change in the interface when I attach files. Since then every single email automation with attachments fails to run due to "attachment url disallowed". Everything worked fine for the past few years, no changes have been made to automation. Therefore, they messed up something in the recent update. The automation test runs fine with no errors. So, nothing wrong on my side. Airtable support chat bot offered to clear the cache to solve the issue, which I did. It seemed to work temporarily. However, I have to clear cache each time for the automation to run, which is unacceptable. Also, clearing the cache is not helpful when the email automation with attachments runs from the forms (i.e. someone submits the form and uploads an attachment, which triggers the email automation). It worked perfectly fine for many years. It looks like there have been multiple reports of this issue in the Airtable community forum, but the issue remains unsolved.
