Key_from_blob: can't read rsa key

Hi All,

The below error flooded in /var/log/messages, could anyone help me to find a solution for it.

sshd[40683]: error: buffer_get_string_ret: buffer_get failed sshd[40683]: error: buffer_get_bignum2_ret: invalid bignum sshd[40683]: error: key_from_blob: can't read rsa key esisog71 sshd[40683]: error: key_read: key_from_blob AAAAB3NzaC1yc2EAAAADAQABAAABAQCuEmT+DTTF2/Keh37VQzrifKNydF3BueifyccEns3P\n failed