AWS keypair failing authentication to PA-VM

[SteveBrown99]

AWS ssh publickey failing while connecting to PA-VM, falls back to password authentication which obviously fails. I suspect some of this behavior is due to macos and openssh deprecating ssh-rsa, PAN-OS 9.1.14 offers ssh-rsa which is rejected by default, -oHostKeyAlgorthms=+ssh-rsa will avoid this issue. Also tried -oPubkeyAcceptedKeyTypes=+ssh-rsa, no difference. Currently using ED25519 keypair instead to see if that makes a difference, it doesn't. Receiving packet type 51 (SSH_MSG_USERAUTH_FAILURE) in response to publickey authentication.

permissions on AWSKey.pem 400

So what gives? Why can't I connect via ssh publickey to AWS PA-VM?

debug1: get_agent_identities: bound agent to hostkey
debug1: get_agent_identities: ssh_fetch_identitylist: agent contains no identities
debug1: Will attempt key: AWSKey.pem ED25519 SHA256:Fb+eyKkBDlwHGAOd4/rw9SRAbkgHk explicit
debug2: pubkey_prepare: done
debug3: send packet: type 5
debug3: receive packet: type 6
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug3: send packet: type 50
debug3: receive packet: type 51
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug3: start over, passed a different list publickey,password,keyboard-interactive
debug3: preferred gssapi-with-mic,publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Offering public key: AWSKey.pem ED25519 SHA256:Fb+eyKkBDlwHGAOd4/rw9SRAbcHk explicit
debug3: send packet: type 50
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 51
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug2: we did not send a packet, disable method
debug3: authmethod_lookup keyboard-interactive
debug3: remaining preferred: password