I dove into UI Extensions yesterday and everything was working fine.
This morning, I’m getting 404s for the extension script.
I tried to load a contentful example extension via the web app to see if it was just me, and those aren’t loading either.
Going one step further, I made a super simple pen with only the script referenced in the github readme to replicate, and the 404 is still appearing in the console:
Anyone else able to replicate or have any solutions?