How to solve the ssh error message: Could not load host key:
root@wlancontroller:~# tailf -n 100 /var/log/auth.log sshd[8500]: error: Could not load host key: /etc/ssh/ssh_host_rsa_key sshd[8500]: error: Could not load host key: /etc/ssh/ssh_host_dsa_key sshd[8500]: error: Could not load host key: /etc/ssh/ssh_host_ecdsa_key sshd[8500]: error: Could not load host key: /etc/ssh/ssh_host_ed25519_key sshd[8500]: fatal: No supported key exchange algorithms [preauth]
Solution: Create ssh keys
dpkg-reconfigure openssh-server
/etc/init.d/ssh restart
