我正在使用SSH在VSTS中进行身份验证来管理我的项目和存储库。 从上周一（07/09）开始，此过程停止工作。我收到以下错误消息：
详细信息：该方法或操作未实现。致命的：不能 从远程存储库读取。
请确保您具有正确的访问权限和存储库 存在。
ssh -v的结果：
debug1: Reading configuration data /home/node/.ssh/config
debug1: /home/node/.ssh/config line 1: Applying options for vs-ssh.visualstudio.com
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 58: Applying options for *
debug1: Connecting to vs-ssh.visualstudio.com [191.232.37.247] port 22.
debug1: Connection established.
debug1: key_load_public: No such file or directory
debug1: identity file /home/node/.ssh/paulo.simao@aperam.visualstudio.com.pem type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/node/.ssh/paulo.simao@aperam.visualstudio.com.pem-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.4
debug1: Remote protocol version 2.0, remote software version SSHBlackbox.10
debug1: no match: SSHBlackbox.10
debug1: Authenticating to vs-ssh.visualstudio.com:22 as 'aperam'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: diffie-hellman-group14-sha1
debug1: kex: host key algorithm: ssh-rsa
debug1: kex: server->client cipher: aes128-ctr MAC: hmac-sha2-256 compression: none
debug1: kex: client->server cipher: aes128-ctr MAC: hmac-sha2-256 compression: none
debug1: kex: diffie-hellman-group14-sha1 need=32 dh_need=32
debug1: kex: diffie-hellman-group14-sha1 need=32 dh_need=32
debug1: sending SSH2_MSG_KEXDH_INIT
debug1: expecting SSH2_MSG_KEXDH_REPLY
debug1: Server host key: ssh-rsa SHA256:ohD8VZEXGWo6Ez8GSEJQ9WpafgLFsOfLOtGGQCQo6Og
debug1: Host 'vs-ssh.visualstudio.com' is known and matches the RSA host key.
debug1: Found key in /home/node/.ssh/known_hosts:1
debug1: rekey after 4294967296 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey after 4294967296 blocks
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: password,publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /home/node/.ssh/paulo.simao@aperam.visualstudio.com.pem
debug1: Authentication succeeded (publickey).
Authenticated to vs-ssh.visualstudio.com ([191.232.37.247]:22).
debug1: channel 0: new [client-session]
debug1: Entering interactive session.
debug1: pledge: network
debug1: Sending environment.
debug1: Sending env LANG = en_US.UTF-8
shell request failed on channel 0
有人知道它发生了什么吗？