Describes the cause and action for error messages.
Error Message(English)：
error invalid key
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https://qiita.com/yhatt/items/0496d58f90fccca524fd
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https://stackoverflow.com/questions/30143101/problems-with-git-hub-local-repo-invalid-key-errors
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https://stackoverflow.com/questions/52227576/web3-git-conflict
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https://stackoverflow.com/questions/13606951/git-submodule-update-gives-error-invalid-key-newline
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https://stackoverflow.com/questions/32016841/unicode-in-git-alias
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https://stackoverflow.com/questions/43361253/github-configure-machine-to-use-existing-ssh-key
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https://github.com/junegunn/vim-plug/issues/154
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https://github.com/tetsu-koba/sandbox/issues/2
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https://github.com/home-assistant/home-assistant/issues/17822