github error key already in use

gistfile1.txt

# If the key already exists in another user (or machine user) or is a deploy key in a project/repo, it can't be used anywhere else.
# Github doesn't inform the owner of the key, the project or any other data about the conflict
# You only see the key fingerprint in every project or user, and a user filed description (text, might not have relation to actual key)
#
# How to see a github compatible fingerprint from a public id_rsa key file:
ssh-keygen -E md5 -lf /$PATH/$ID_RSA_FILE