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java.lang.NullPointerException at weblogic.servlet.internal.session.SessionData.reuseSessionId(SessionData.java:215) at weblogic.servlet.internal.session.SessionData.<init>(SessionData.java:133) at weblogic.servlet.internal.session.MemorySessionData.<init>(MemorySessionData.java:9) at weblogic.servlet.internal.session.MemorySessionContext.getNewSession(MemorySessionContext.java:21) at weblogic.servlet.internal.ServletRequestImpl$SessionHelper.getNewSession(ServletRequestImpl.java:3274) at weblogic.servlet.internal.ServletRequestImpl$SessionHelper._getSessionInternal(ServletRequestImpl.java:2746) at weblogic.servlet.internal.ServletRequestImpl$SessionHelper.getSessionInternal(ServletRequestImpl.java:2702) at weblogic.servlet.internal.ServletRequestImpl$SessionHelper.getSession(ServletRequestImpl.java:2692) at weblogic.servlet.internal.ServletRequestImpl.getSession(ServletRequestImpl.java:1401) at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:255) at jsp_servlet.__login._jspService(__login.java:23) at weblogic.servlet.jsp.JspBase.service(JspBase.java:35)