It is empty
Just checked, all ok here.
Hey Andreas, I'm going to check on this with QA. I saw this once myself but then it disappeared.
I think that in my case I closed the browser window of the editor. I opened it again in the editor and the NPM libraries displayed correctly.
Hi Andreas, I'm not 100% sure, but it looks like Editor windows that have been open for a while on your computer encounter this error. For whatever reason, on my computer I have several Editor windows open and on every one of them, I see this error. If I refresh the page or create a new site, the npm modules load just fine.
Regarding the sites that were already open, I suspect there's a network connection issue. In my browser console I saw this:
I'm sort-of assuming this is a one-time thing and that it will resolve by itself. In the meantime just refresh your page and hopefully this will not recur. Good luck!