Assets like avatars, avatar previews, world previews, world assets during world download/instance join, etc. fail to load randomly due to a "502 Bad Gateway" / "The web server reported a bad gateway error." error being thrown by CloudFlare. This is an API platform/backend issue but in addition to fixing this on the server side, the client should retry failed requests (with an exponential backoff) for several times until it gives up.

Example CF Ray IDs: 54ca9f3dcb1459dc, 54ca6a65ccc559dc, 54ca65f8dc2559dc, 54cad7022e4659dc

/cdn-cgi/trace from CF if it's helpful:

fl=114f38

h=api.vrchat.cloud

ip=x.x.x.x

ts=1577613425.093

visit_scheme=https

uag=Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.88 Safari/537.36

colo=VIE

http=http/2

loc=AT

tls=TLSv1.2

sni=plaintext

warp=off