Portlet are not configurable

Document ID : KB000122949
Last Modified Date : 12/12/2018
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Issue:
We have few portlets where it does not allow users add/removed columns from the Layout using the configure option. They return "System error contact system administrator". Why is this happening?
Cause:
it is unknown why portlet became corrupted.
Resolution:
XOG out the problematic portlet and XOG back in unchanged.

You can use below XOG input file for reading portlet

<?xml version="1.0" encoding="UTF-8"?>
<NikuDataBus xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../xsd/nikuxog_read.xsd">
  <Header version="8.0" action="read" objectType="contentPack" externalSource="NIKU">
    <args name="singleContentType" value="portlet"/>
    <args name="no_dependencies" value="true"/>
  </Header>
  <PortletQuery>
    <Filter name="code" criteria="EQUALS">portlet_id</Filter>
  </PortletQuery>
</NikuDataBus>