ssh: permissions in files /etc
Solution 1:
sshd is refusing to use your hostkeys due to the permissions being too open, here are the commands to run so the ssh files should be set to:
sudo chmod 755 /etc/ssh
sudo chmod 644 /etc/ssh/moduli
sudo chmod 644 /etc/ssh/ssh_config
sudo chmod 755 /etc/ssh/ssh_config.d
sudo chmod 600 /etc/ssh/ssh_host*
sudo chmod 644 /etc/ssh/ssh_host*.pub
sudo chmod 644 /etc/ssh/sshd_config
sudo chmod 755 /etc/ssh/sshd_config.d