Unable to create graph reports in Zenoss 6.2.1 under Reports

Type: <class 'zExceptions.BadRequest'>
Value: <h2>Site Error</h2> <p>An error was encountered while publishing this resource. </p> <p><strong>Invalid request</strong></p> The parameter, <em>id</em>, was omitted from the request.<p>Make sure to specify all required parameters, and try the request again.</p> <hr noshade="noshade"/> <p>Troubleshooting Suggestions</p> <ul> <li>The URL may be incorrect.</li> <li>The parameters passed to this resource may be incorrect.</li> <li>A resource that this resource relies on may be encountering an error.</li> </ul> <p>For more detailed information about the error, please refer to the error log. </p> <p>If the error persists please contact the site maintainer. Thank you for your patience. </p>

Traceback (most recent call last):
  File "/opt/zenoss/lib/python2.7/site-packages/ZPublisher/Publish.py", line 126, in publish
    request, bind=1)
  File "/opt/zenoss/lib/python2.7/site-packages/ZPublisher/mapply.py", line 72, in mapply
    if index < nrequired: v=missing_name(name, context)
  File "/opt/zenoss/lib/python2.7/site-packages/ZPublisher/Publish.py", line 51, in missing_name
    request.response.badRequestError(name)
  File "/opt/zenoss/lib/python2.7/site-packages/ZPublisher/HTTPResponse.py", line 741, in badRequestError
    "and try the request again.</p>"
BadRequest:   <h2>Site Error</h2>
  <p>An error was encountered while publishing this resource.
  </p>
  <p><strong>Invalid request</strong></p>

  The parameter, <em>id</em>, was omitted from the request.<p>Make sure to specify all required parameters, and try the request again.</p>
  <hr noshade="noshade"/>

  <p>Troubleshooting Suggestions</p>

  <ul>
  <li>The URL may be incorrect.</li>
  <li>The parameters passed to this resource may be incorrect.</li>
  <li>A resource that this resource relies on may be
      encountering an error.</li>
  </ul>

  <p>For more detailed information about the error, please
  refer to the error log.
  </p>

  <p>If the error persists please contact the site maintainer.
  Thank you for your patience.
  </p>