Tapestry 5.3.6 JSONObject No null checking leads to NPE in Palette component

[Michael]

*java.lang.NullPointerException* :

   * at
     org.apache.tapestry5.json.JSONObject.printValue(JSONObject.java:887)
   * at org.apache.tapestry5.json.JSONArray.print(JSONArray.java:436)
   * at
     org.apache.tapestry5.json.JSONCollection.toString(JSONCollection.java:47)
   * at
     org.apache.tapestry5.json.JSONCollection.toString(JSONCollection.java:63)

   * at
     
org.apache.tapestry5.corelib.components.Palette.beginRender(Palette.java:393)




There is no null checking in printValue(JSONPrintSession session, Object 
value)

Adding :

        if (NULL.equals(value))
        {
            session.print(NULL.toString());
            return;
        }

solves the problem.

--
Best regards,
Michael Gagauz