About KUBEBOT_SLACK_CHANNELS_IDS variable problem in Running the binary

[hsush2017]

I run the kubebot binary, and I have a channel named "#test", and its channel ID is "abcd".
If I use KUBEBOT_SLACK_CHANNELS_IDS="abcd", it says: ⚠ Channel %s forbidden for user @XX
If I use KUBEBOT_SLACK_CHANNELS_IDS="#test", and it's OK?!

but when I run on the kubernetes
If I use KUBEBOT_SLACK_CHANNELS_IDS="abcd", it's OK

why?