Related to this old thread? Lots of people have commented here again and an Apple rep has responded a few hours ago saying they are looking into it. https://developer.apple.com/forums/thread/701330?answerId=738741022#738741022

@omiisdope to help merge threads, do you get the same errors as in this thread? https://forums.developer.apple.com/forums/thread/748129 You'll just need to scroll up a little bit in the terminal to see it if it's there. Should be right before these lines ==> Formula Tap: apple/apple Path: /usr/local/Homebrew/Library/Taps/apple/homebrew-apple/Formula/game-porting-toolkit.rb