On January 15th at 12:00pm PT, a code change to improve error messages in Slack caused some users to experience difficulties editing and uploading custom emoji. At 6:00pm PT we identified the affected deploy, conducted an investigation and reverted the deploy, resulting in all users being able to successfully edit or upload custom emoji by 8:00pm PT.
We have implemented preventive measures to ensure this doesn’t happen in the future. If you are still having issues, please reach out to us at firstname.lastname@example.org.
10:09 PM PST - Jan 15th・See in your timezone
We've been given the all-clear! Everyone should be able to upload new custom emoji once more. We're so sorry for getting in the way of you and your shiny new emoji. Thank you for your patience and understanding.
8:01 PM PST - Jan 15th・See in your timezone
We're digging into why people are unable to upload new custom emoji. Apologies for the disruption.
6:27 PM PST - Jan 15th・See in your timezone