Unable to clone or establish an ssh connection with your remote git

Issue/Scenario :

You encounter the following error/exception when creating a git based project or cloning a repo into your workspace or dfs project : No more authentication methods available

Root Cause & Resolution :

At a first glance it would seem like the prompt/exception is coming from your git provider and we'd recommend you ensure the correct key pair is being used and the correct permissions are provisioned for your remote repo. If, however, you have tested/verified that a clone can be performed on your local machine using the same key pair then it could be the following case, it was recently discovered that rsa 2k/4k isn't supported but ed25519 is, so the next steps would be to create a new ed25519 key and add the key pair to appropriate locations : 

ssh-keygen -t ed25519
cat ~/.ssh/id_ed25519.pub

ed25519 is a pki algorithm different to rsa but is faster, more compact and provides better security, so not using rsa shouldn't concern you. This has been tested for Domino version 5.2.2, wherein when using the rsa key pair we were unable to create a git based project but after updating it with ed25519 we were successfully able to create a new git based project.