Slack trigger throws error when a file is shared in Slack

Questions
1

n8n Slack Trigger throws an error when a file or an image is shared on Slack . It just works highly inconsistently when it works sometimes but does not most of the other time. Please help me, thank you.

What is the error message (if any)?

Cannot read properties of undefined (reading ‘channel’)

Please share your workflow

2

Hi, is the workflow active?

3

Hey @Dong_Tran ,

Aee you sure all the right permissions are given to the slack app ?

5

Hi @mrrobot, here are the scopes I added:

image
image425×784 44 KB

And these are the event subscriptions:

image
image512×805 32 KB

6

Hey @Dong_Tran ,

Event subscription are here (Pic below)

image
image1125×798 90.8 KB

And in the request URL you put your webhook n8n url

Jm