The error happens when I try to save my avatar.

I've tried hard refreshing, leaving the wardrobe page and then going back, and I even tried clearing my cache, and it still happens. I don't know if it's just that one item as I haven't tested everything.

Tried to test this out, but I didn't have those lights. Just bought some and added them to my wardrobe. The item isn't showing up at all.

I've got some other colour Festive Luminaire Lights, which seem to be working fine. Just the white one's bugged?

I just tested it out, and they work fine for me. I was able to save my HA with them on no problem.

Sorry I don't have a solution for you, but maybe you should post this in problems & bugs if it doesn't resolve itself. Hopefully you get it figured out! :c

I tried the other lights that I have in my wardrobe. The yellow, green, red, and purple ones work. White, blue, and multi-colored don't. Which is really weird. Although I'm sure some of the ones working now were not working yesterday... Maybe the other ones will work later.

Ah well, thanks for responding.

My multicolor lights throw up the same error nods my green work though

I discovered that the lights I was trying to use weren't actually in my wardrobe even though it showed them as if they were. Also I'm pretty sure they used to be in my wardrobe, and I never took them out. But then I decided to try to remove them and put them back, only to find they were not on the page for removing wardrobe items. I had to buy new ones and put them in my wardrobe. I don't know what happened. But you may have to do the same thing.

That fixed it! I had the lights in my ornament inventory but not my wardrobe. Once I moved them to my wardrobe they saved perfectly :) Weird how that is picking up in the ornaments inventory...