Skip to main content
Best answer

Slack New Mention Trigger failing: "Error while retrieving: message.channel.startsWith is not a function Console logs" error

  • May 13, 2025
  • 1 reply
  • 28 views

Is anyone else hitting this error when trying to test a new draft Zap that triggers on a New Mention in Slack? Other Zaps continue to function as well as other Slack triggers. I have a ticket open with Support but figured I’d ask here.

 

Unable to pull mentions

Please reload the page. If the issue persists, troubleshoot error or contact Support.

Error code: Error while retrieving: message.channel.startsWith is not a function Console logs:

 


 

Best answer by SamB

Hi there, ​@mikem-coalesce 👋

I can see our Support team added you to a recently reported bug with Slack’s New Mention trigger. I checked the bug report and saw that it was since fixed in the latest version of the Slack app! 🎉

So those “Error while retrieving: message.channel.startsWith is not a function Console logs” errors should no longer be appearing. That said, if you’re still experiencing any issues please do reach back out here or get in touch with Support directly

In the meantime, happy Zapping! 😁⚡

This post has been closed for comments. Please create a new post if you need help or have a question about this topic.

1 reply

SamB
Community Manager
Forum|alt.badge.img+11
  • Community Manager
  • 9744 replies
  • Answer
  • May 14, 2025

Hi there, ​@mikem-coalesce 👋

I can see our Support team added you to a recently reported bug with Slack’s New Mention trigger. I checked the bug report and saw that it was since fixed in the latest version of the Slack app! 🎉

So those “Error while retrieving: message.channel.startsWith is not a function Console logs” errors should no longer be appearing. That said, if you’re still experiencing any issues please do reach back out here or get in touch with Support directly

In the meantime, happy Zapping! 😁⚡