People using Slack all around complains about outages and weird bugs in services, notifications, calls, connections, search, messaging, integrated apps, APIs, link previews, posting, and workplace/organization administration.

Slack reports that “Degraded service affecting multiple features”
and that ” Functionality is almost back to normal, but some users may see some sporadic problems while we work on remediation. “

you can follow on updates from the official Slack system status page in the link below

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