So second command fails:
brew install --cask adoptopenjdk8 Error: Cask adoptopenjdk8 exists in multiple taps: homebrew/cask-versions/adoptopenjdk8 adoptopenjdk/openjdk/adoptopenjdk8
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So second command fails:
brew install --cask adoptopenjdk8
Error: Cask adoptopenjdk8 exists in multiple taps:
homebrew/cask-versions/adoptopenjdk8
adoptopenjdk/openjdk/adoptopenjdk8