java.lang.NullPointerException: This exception has no message.

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This exception has no message.
java.lang.NullPointerException:
at undefined.ProjectTypesEditor.createEditComponent(ProjectTypesEditor.java:54)
at com.sun.itstar.htmlediting.HtmlEditorImpl.createEditComponent(HtmlEditorImpl.java:53)
at com.sun.itstar.htmlediting.HtmlEditorImpl.getEditComponent(HtmlEditorImpl.java:168)
at com.sun.itstar.htmlediting.HtmlEditorImpl.getEditContent(HtmlEditorImpl.java:89)
at com.sun.itstar.htmlediting.HtmlEditServlet.doGet(HtmlEditServlet.java:62)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.StandardWrapperValve.invokeServletService(Unknown Source)
at org.apache.catalina.core.StandardWrapperValve.access$000(Unknown Source)
at org.apache.catalina.core.StandardWrapperValve.invoke(Unknown Source)
at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
at org.apache.catalina.core.StandardContextValve.invoke(Unknown Source)
at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
at org.apache.catalina.core.StandardHostValve.invoke(Unknown Source)
at com.iplanet.ias.web.connector.nsapi.NSAPIProcessor.process(Unknown Source)
at com.iplanet.ias.web.WebContainer.service(Unknown Source)

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