Can't submit apps to AppStore: ERROR ITMS-90534: "Invalid Toolchain

Question

ERROR ITMS-90534: \"Invalid Toolchain.

New apps and app updates must be built with the public (GM) versions of Xcode 6 or later, macOS,

Answer 1

Xcode 11.2 is deprecated by Apple on November 5, 2019

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Always working workaround (Manual download)

Download the xip file from here

Also:

Latest Release version (Xcode 11.2.1)

or

Latest Beta version (Xcode 11.3 Beta)

or

Any version you need. And all other downloadable contents

Then extract and move it where you like.

You can find all workaround histry of the issue here.