failed to push some refs to 'https://ift.tt/2YqvtjV'

C:\xampp\htdocs\starter> git push heroku master

To https://git.heroku.com/damp-lowlands-91408.git ! [remote rejected] master -> master (pre-receive hook declined) error: failed to push some refs to 'https://ift.tt/2YqvtjV'

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