While I am trying heroku login through cmd in my machine, it says

Could not find existing public key
Would you like to generate one? [YN]

After that when I press 'y' and enter it says

Generating new ssh public key
Could not generate key: "ssh-keygen" is not recognized as a internal or external command operable program or batch file

Please help me.

heroku ssh public-key heroku-toolbelt
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