Bahmni EPEL GPG Key Error when installing on Centos.

Hi. I am trying to install Bahmni on Centos 6.8. I get the following error. Kindly help

TASK [bahmni-base : Import EPEL GPG key.] ************************************** task path: /opt/bahmni-installer/bahmni-playbooks/roles/bahmni-base/tasks/main.yml:13 fatal: [localhost]: FAILED! => {“changed”: false, “failed”: true, “msg”: “Not a valid key /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-NA”}

NO MORE HOSTS LEFT ************************************************************* [WARNING]: Could not create retry file ‘all.retry’. [Errno 2] No such file or directory: ‘’

PLAY RECAP ********************************************************************* localhost : ok=10 changed=1 unreachable=0 failed=1

Traceback (most recent call last): File “/bin/bahmni”, line 9, in load_entry_point(‘bahmni==0.1’, ‘console_scripts’, ‘bahmni’)() File “/usr/lib/python2.7/site-packages/click-6.6-py2.7.egg/click/”, line 716, in call return self.main(*args, **kwargs) File “/usr/lib/python2.7/site-packages/click-6.6-py2.7.egg/click/”, line 696, in main rv = self.invoke(ctx) File “/usr/lib/python2.7/site-packages/click-6.6-py2.7.egg/click/”, line 1060, in invoke return _process_result(sub_ctx.command.invoke(sub_ctx)) File “/usr/lib/python2.7/site-packages/click-6.6-py2.7.egg/click/”, line 889, in invoke return ctx.invoke(self.callback, **ctx.params) File “/usr/lib/python2.7/site-packages/click-6.6-py2.7.egg/click/”, line 534, in invoke return callback(*args, **kwargs) File “/usr/lib/python2.7/site-packages/click-6.6-py2.7.egg/click/”, line 17, in new_func return f(get_current_context(), *args, **kwargs) File “build/bdist.linux-x86_64/egg/”, line 50, in install File “/usr/lib64/python2.7/”, line 542, in check_call raise CalledProcessError(retcode, cmd) subprocess.CalledProcessError: Command ‘ansible-playbook -i /etc/bahmni-installer/local all.yml -vv --extra-vars ‘@/etc/bahmni-installer/rpm_versions.yml’ --extra-vars ‘@/etc/bahmni-installer/setup.yml’’ returned non-zero exit status 1

Whats are the contents of /etc/redhat-release

Apologies. I just noticed the machine runs Userful Linux release 7.2

Okay. Centos 6.7 or 6.8 are recommedend