Xcode 9.2 Upload to App Store fails with description length and invalid toolchain errors

Question

I\'ve read through a bunch of forums including here:
https://forums.developer.apple.com/thread/87862
and some Stack Overflow posts.

I have tried modifying my

Answer 1

I started with several "iTunes store operation failures". While fixing the other errors, I keep trying to fix this "description length" error too - but it always failed. So I solved all other errors first and suddenly this error was gone too.

I BELIEVE this error depends on other errors. The last error I fixed was called "Storyboard file not found")

Xcode 9.2