I get the same error if i try to update through VRCX as well, i dont believe there is another way to update the thumbnail. I can change the description and upload the whole world fine, its just the thumbnail. Is there a fix for this?
I legit just came to make this post, I keep getting internal 500 server error, application error, file has already been uploaded, when I try to update my thumbnail. I can upload the world, update the description but I can’t change the thumbnail any longer.
From googling I’ve tried vrcx, I’ve tried regenerating my scene id’s, this started for me around the time vrc was having api issues last night on 6/1/2025 - 6/2/2025.
so glad it’s not just me! the one time in two years i try to update my thumbnail lol. hope it gets patched soon : ]
legit just signed up to forums to ask about the same thing lol. hopefully it’s just a bug :[
Took a look at feedback.vrc and found the same post but with actual help/being marked tracked so they are aware of it. Be sure to vote it up so they know it’s an active issue for us.
We’re aware of this issue and are working on a fix!
The underlying issue has been resolved!