I am noticing you already have an existing Feed called "Compliance and Risk" , but attached to the archived #diversity-equity-and-inclusion channel.
I believe whats happening is that there's a conflict when you try to create a Feed for the #compliance-and-risk channel, since there is already a Feed by that same name. I'm going to log a bug to fix this. In the meantime, if you edit the Name and Slug of the archived Feed, I believe you should be able to create the new feed successfully.