I copied the private key from the Jenkins machine running on Docker and ensured it is in the Jenkins user. I then pasted the private key into global credentials as an SSH user with a private key. Additionally, I copied the public key to the repository settings in Bitbucket under 'Access Keys'. However, when I tried to check the connection while configuring the pipeline, it threw an error stating 'STDERR: fatal: repository doesn't exist or you don't have access rights'. I checked various forums, but most solutions contain errors, while my issue is displaying code 128 and above