Hey @BYK and others 
i was able to follow this guide and get slack integrated but when i try to make an alert rule for a project i get told “The slack resource “EXAMPLE_PUBLIC_CHANNEL” does not exist or has not been granted access in the XXXX Slack workspace”
( i am running the latest nightly build Sentry 20.7.0.dev07251c9c)
any idea what i may have missed o.0 i even tried inviting the bot to the channel, going super lax on scopes made no difference either
