Unable to start cloudera-scm-agent and unacle to get log files for agent

i installed cloudera-manager-centos7-cm5.10.1_x86_64.tar.gz on RHEL6 with using PATH C (Manual installation using tarballs).but unable to start cloudera-scm-agent and unable to get log file from /opt/cloudera-manager/cm-5.10.1/log/cloudera-scm-agent directory.whenever am trying to log files from agent log directory it gives message/error like “”/usr/bin/env: python2.7: No such file or directory""

please make help me on this.

Thanks