When close request -HTTP Status 500

Hello.
Yesterday I install last update on SD+. Today i have 2 error in SD+ when close request.
See error log:

HTTP Status 500 -

--------------------------------------------------------------------------------

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException
    org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:545)
    org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:486)
    org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
    org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
    org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
    com.adventnet.servicedesk.filter.EncodingFilter.doFilter(EncodingFilter.java:109)
    org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:350)
    com.adventnet.servicedesk.authentication.NTLMV2CredentialAssociationFilter.doFilter(NTLMV2CredentialAssociationFilter.java:35)
    com.adventnet.servicedesk.authentication.NTLMV2Filter.doFilter(NTLMV2Filter.java:116)
    org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)

root cause

java.lang.NullPointerException
    com.adventnet.servicedesk.workorder.action.RequestResolutionAction.createActionForward(RequestResolutionAction.java:422)
    com.adventnet.servicedesk.workorder.action.RequestResolutionAction.execute(RequestResolutionAction.java:412)
    org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
    org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
    org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
    org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
    com.adventnet.servicedesk.filter.EncodingFilter.doFilter(EncodingFilter.java:109)
    org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:350)
    com.adventnet.servicedesk.authentication.NTLMV2CredentialAssociationFilter.doFilter(NTLMV2CredentialAssociationFilter.java:35)
    com.adventnet.servicedesk.authentication.NTLMV2Filter.doFilter(NTLMV2Filter.java:116)
    org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)

note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.