Searching the Web for this message brings up discussions where developers accidentally tried to create a new extension instead of update an existing one, but I was unable to find anything about this happening from the API (it was always to do with the Web front-end).
Is the documentation correct? Have I misunderstood it? What exactly do I need to change so that my curl command uploads a new version of an existing add-on? Thanks.
Sorry for the double-post, @referencedexpressions – one possibility here is that you need to add the brackets to the URL. Try https://addons.mozilla.org/api/v5/addons/{2913c416-cda7-4b3d-aef0-f71995b8a05f}/versions/0.1.2/ and see if that works?
If it doesn’t, we’ll open up an issue.
Edited to add: Had to edit this multiple times due to poor copy/paste/checking for correctness skills.