Affects Version/s: PC-1.13.9
Fix Version/s: None
iMac High /sierra 10.13.6 (17G65)
Once world upload is 100% successful and it says "Verifying your world" the interface consistently mistakenly returns this error:
Upload failed! (500)
Yet this is consistently not true, the world actually being there having uploaded successfully.
Also, when trying to initiate an upload to begin with, it takes many tries before it accepts (like trying to jam a wrinkly dollar into a vending machine). Today it was my 11th try that finally succeeded.
The error it returns on these aborted tries varies, but typically fails between 6% and 7% with:
Upload failed: (-1)
I've not had an upload fail that made it past 12%.