ubuntu – can not connect to the server

They gave me access to a server through SSH. I never connected to that server before.

I tried:

This is what I am receiving:

ssh -vT user @ server
OpenSSH_7.6p1 Ubuntu-4ubuntu0.1, OpenSSL 1.0.2n December 7, 2017
debug1: Reading configuration data / etc / ssh / ssh_config
debug1: / etc / ssh / ssh_config line 19: Apply options for *
debug1: Connecting to myserver [ip-address-of-server] port 22
debug1: established connection.
debug1: identity file /home/myself/.ssh/id_rsa type 0
debug1: key_load_public: there is no such file or directory
debug1: identity file /home/myself/.ssh/id_rsa-cert type -1
debug1: key_load_public: there is no such file or directory
debug1: identity file /home/myself/.ssh/id_dsa type -1
debug1: key_load_public: there is no such file or directory
debug1: identity file /home/myself/.ssh/id_dsa-cert type -1
debug1: key_load_public: there is no such file or directory
debug1: identity file /home/myself/.ssh/id_ecdsa type -1
debug1: key_load_public: there is no such file or directory
debug1: identity file /home/myself/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: there is no such file or directory
debug1: identity file /home/myself/.ssh/id_ed25519 type -1
debug1: key_load_public: there is no such file or directory
debug1: identity file /home/myself/.ssh/id_ed25519-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_7.6p1 Ubuntu-4ubuntu0.1
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.2p2 Ubuntu-4ubuntu2.6
debug1: match: OpenSSH_7.2p2 Ubuntu-4ubuntu2.6 pat OpenSSH * compat 0x04000000
debug1: authentication to myserver: 22 as & # 39; user & # 39;
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256@libssh.org
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server-> client encryption: chacha20-poly1305@openssh.com MAC:  compression: none
debug1: kex: client-> server encryption: chacha20-poly1305@openssh.com MAC:  compression: none
debug1: waiting for SSH2_MSG_KEX_ECDH_REPLY
debug1: server host key: ecdsa-sha2-nistp256 SHA256: OYtVdkVQopchOo / NTkWu3E3LgrOBcFCnUf3kT2ysxYI
debug1: the host & # 39; myserver & # 39; is known and matches the ECDSA host key.
debug1: key found in /home/myself/.ssh/known_hosts:1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: waiting for SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs =
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: following authentication method: publickey
debug1: public offer key: RSA SHA256: rodDDDMJUJf740XBSz / spn + 06wOUnl9K3O / PnZpFlJo /home/myself/.ssh/id_rsa
debug1: Authentications that can continue: publickey
debug1: Test private key: /home/myself/.ssh/id_dsa
debug1: trying private key: /home/myself/.ssh/id_ecdsa
debug1: trying the private key: /home/myself/.ssh/id_ed25519
debug1: There are no more authentication methods to try.
user @ server: Permission denied (publickey).

What caused this and how to fix it?