bitbucket integration with jenkins

[Hagar Mohamed]

I am new to using Jenkins and bitbucket, I am trying to integrate jenkins server with bitbucket server so I used a private key and public key

1. I used ssh-keygen in the jenkins master
2. I copied the public key and add it to bitbucket accesskeys
3. I added the private key to the Jenkins GUI credentials

and I got this error every time however git clone is working fine in the jenkins master itself.