Why is the overpage of the Splunk App for AWS not to showing the graphical output?

Overpage of Splunk App for AWS is not to showing the graphical output and I'm getting below exception in splunkd.log 10-27-2016 10:31:38.395 -0400 ERROR ScriptRunner - stderr from '/apps/opt/SPLUNK/splunk/bin/python /apps/opt/SPLUNK/splunk/bin/runScript.py setup': Exception TypeError: "'NoneType' object is not callable" in ignored 10-27-2016 10:31:38.439 -0400 ERROR ScriptRunner - stderr from '/apps/opt/SPLUNK/splunk/bin/python /apps/opt/SPLUNK/splunk/bin/runScript.py setup': Exception TypeError: "'NoneType' object is not callable" in ignored 10-27-2016 10:31:39.480 -0400 ERROR ScriptRunner - stderr from '/apps/opt/SPLUNK/splunk/bin/python /apps/opt/SPLUNK/splunk/bin/runScript.py execute': Exception TypeError: "'NoneType' object is not callable" in ignored 10-27-2016 10:31:39.563 -0400 ERROR ScriptRunner - stderr from '/apps/opt/SPLUNK/splunk/bin/python /apps/opt/SPLUNK/splunk/bin/runScript.py execute': Exception TypeError: "'NoneType' object is not callable" in ignored