EXEC previous known host file not found for hostname

Hi,

I am getting below error “previous known host file not found”. Below error is from Tower, if i try to execute from Command it keeps running indefinitely

TASK: [Check Version] *******************************************
<solaris.domain.com ESTABLISH CONNECTION FOR USER: sathya
<solaris.domain.com REMOTE_MODULE command chdir=/proj/new_proj executable=/usr/bin/bash /usr/bin/bash /proj/new_proj/new_proj-install/manage-proj.sh “Check-Version”
<solaris.domain.com EXEC sshpass -d15 ssh -C -tt -v -o ControlMaster=auto -o ControlPersist=60s -o ControlPath=“/tmp/ansible_tower_DoIJ9S/cp/ansible-ssh-%h-%p-%r” -o StrictHostKeyChecking=no -o Port=7777 -o GSSAPIAuthentication=no -o PubkeyAuthentication=no -o User=sathya -o ConnectTimeout=10 solaris.domain.com /bin/sh -c

EXEC previous known host file not found for solaris.domain.com

Ansible Version

sathya@ubuntu:~$ ansible --version
ansible 1.9.2
configured module search path = None

Tower Version 2.1.6