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

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This exception has no message.
java.lang.NullPointerException:
at oracle.webdb.utils.HTTPUtils.encode(Unknown Source)
at oraURLProviderInstance.makeQueryStringcle.portal.provider.v2.http.(Unknown Source)
at oracle.portal.provider.v2.http.URLProviderInstance.initSession(Unknown Source)
at oracle.webdb.provider.v2.adapter.soapV1.ProviderAdapter.initSession(Unknown Source)
at oracle.webdb.provider.v2.adapter.soapV1.ProviderAdapter.initSession(Unknown Source)
at oracle.webdb.provider.v2.utils.soap.SOAPProcessor.doMethodCall(Unknown Source)
at oracle.webdb.provider.v2.utils.soap.SOAPProcessor.processInternal(Unknown Source)
at oracle.webdb.provider.v2.utils.soap.SOAPProcessor.process(Unknown Source)
at oracle.webdb.provider.v2.adapter.SOAPServlet.doSOAPCall(Unknown Source)
at oracle.webdb.provider.v2.adapter.SOAPServlet.service(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:336)
at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:66)
at oracle.security.jazn.oc4j.JAZNFilter.doFilter(JAZNFilter.java:284)
at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:539)
at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:285)
at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:771)
at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:170)
at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:72)
at java.lang.Thread.run(Thread.java:484)

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