Last tested: Nov 6, 2019
Are you trying to send data from Looker to Slack? Can you see user names, but no Slack channels in the drop down menu? You've come to the right community article!
Step 1: Make sure you're talking about Action Hub
Check this Sending Data from Looker with the Slack Attachment (API Token) Action link to verify you're on the same page
Step 2: Make sure you set up the action properly
Confirm you've followed all the steps here, specifically adding the permissions for channels:read, users:read, and files:write:user
Step 3: Make sure you added the action to the Slack channel
Have you added the app to the channel yet? You should see an add app to channel button in the settings cog dropdown in Slack
Step 4: If all else fails, re-add the bot to the workplace
Followed the steps. What I observe:
So, what now?