title: Tk initialization failed: no display name and no $DISPLAY environment variable
body: <p>I am trying to invoke the tool on Centos server from the Ubantu terminal.I am getting the following error.</p>
  
  <p><strong>Tk initialization failed: no display name and no $DISPLAY environment variable.</strong></p>
  
  <p>Please Help me with this.Thanks in advance.</p>