Slack has reported a service disruption that has impacted actions, workflows, and alerts associated with this integration for a minimal customer subset. You can track the status of this outage on Slack's status page here: https://status.slack.com/2021-01/9ecc1bc75347b6d1
While the outage is not officially resolved by Slack, we are witnessing mostly successful processing of requests for this integration at this time and failures are minimal as it appears the outage is subsiding. Our Engineering team is tracking any failures and reprocessing them as necessary. No action is required on your part to remediate these failures if you were impacted.
We'll continue to provide updates until the incident has been reported as fully resolved.