Hey @junekyung - it is likely you need to revisit your restrictions of your Airtable's accessibility to Slack! Try detaching it and then reconnect. When reconnecting - be sure to accept the accessibility options you'd like.
@IbrahimAlfaraj‘s suggestion should solve the problem for you. If Ibrahim’s suggestion doesn’t work, then I would troubleshoot further by connecting Airtable to Slack using Make, which offers significantly more power & customizability with its Slack integrations.
If it works in Make, then there’s something wrong in your Airtable setup. If it doesn’t work in Make, then there is something wrong with your Slack setup.