## 事象 `brew install git` や `brew reinstall git` を実行したら以下のエラーが発生する。 ```error Error: undefined method 'to_sym' for nil /opt/homebrew/Library/Homebrew/api/cask/cask_struct_generator.rb:100:in 'block in Homebrew::API::Cask::CaskStructGenerator.process_depends_on' /opt/homebrew/Library/Homebrew/api/cask/cask_struct_generator.rb:87:in 'Hash#to_h' /opt/homebrew/Library/Homebrew/api/cask/cask_struct_generator.rb:87:in 'Homebrew::API::Cask::CaskStructGenerator.process_depends_on' /opt/homebrew/Library/Homebrew/api/cask/cask_struct_generator.rb:26:in 'Homebrew::API::Cask::CaskStructGenerator.generate_cask_struct_hash' /opt/homebrew/Library/Homebrew/cask/cask_loader.rb:446:in 'Cask::CaskLoader::FromAPILoader#load_from_api' /opt/homebrew/Library/Homebrew/cask/cask_loader.rb:436:in 'Cask::CaskLoader::FromAPILoader#load' /opt/homebrew/Library/Homebrew/cask/cask_loader.rb:674:in 'Cask::CaskLoader.load' /opt/homebrew/Library/Homebrew/cli/named_args.rb:381:in 'block in Homebrew::CLI::NamedArgs#load_formula_or_cask' /opt/homebrew/Library/Homebrew/api.rb:392:in 'Homebrew.with_no_api_env_if_needed' /opt/homebrew/Library/Homebrew/cli/named_args.rb:336:in 'Homebrew::CLI::NamedArgs#load_formula_or_cask' /opt/homebrew/Library/Homebrew/cli/named_args.rb:85:in 'block in Homebrew::CLI::NamedArgs#to_formulae_and_casks' /opt/homebrew/Library/Homebrew/cli/named_args.rb:84:in 'Array#each' /opt/homebrew/Library/Homebrew/cli/named_args.rb:84:in 'Enumerable#flat_map' /opt/homebrew/Library/Homebrew/cli/named_args.rb:84:in 'Homebrew::CLI::NamedArgs#to_formulae_and_casks' /opt/homebrew/Library/Homebrew/cmd/install.rb:209:in 'Homebrew::Cmd::InstallCmd#run' /opt/homebrew/Library/Homebrew/brew.rb:114:in '<main>' Please report this issue: https://docs.brew.sh/Troubleshooting ``` ### 環境 | 対象 | バージョン | | ------------ | ------ | | [[macOS]] | 15.7.4 | | [[Homebrew]] | 詳細不明 | ## 原因 不明。 ## 解決方法 `brew update-reset` を実行する。