Unable to install macOS Big Sur: The package %@ is missing or invalid

While trying to install macOS Big Sur public release on my MacBook Pro 16", it fails with alert message: "The package %@ is missing or invalid"

I've tried at-least 3 times by downloading 12.18 GB package from fresh but after downloading it fails while installing.

Looking through install.log in console.app, it says:

The package “%@” is missing or invalid., identifier=com.apple.pkg.InstallAssistant.macOSBigSur

Switch to Ethernet if you can and it will work. Don’t ask me why.
Unable to install macOS Big Sur: The package %@ is missing or invalid
 
 
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