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

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java.lang.NullPointerException:
at java.lang.StringBuffer.(StringBuffer.java:120)
at org.kuali.kfs.module.ar.report.service.impl.AccountsReceivableReportServiceImpl.generateCityStateZipLine(AccountsReceivableReportServiceImpl.java:824)
at org.kuali.kfs.module.ar.report.service.impl.AccountsReceivableReportServiceImpl.generateCreditMemo(AccountsReceivableReportServiceImpl.java:146)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at com.sun.proxy.$Proxy325.generateCreditMemo(Unknown Source)
at org.kuali.kfs.module.ar.document.web.struts.CustomerCreditMemoDocumentAction.printCreditMemoPDF(CustomerCreditMemoDocumentAction.java:285)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.kuali.rice.kns.web.struts.action.KualiAction.dispatchMethod(KualiAction.java:171)
at org.kuali.rice.kns.web.struts.action.KualiAction.execute(KualiAction.java:129)
at org.kuali.rice.kns.web.struts.action.KualiDocumentActionBase.execute(KualiDocumentActionBase.java:176)
at org.kuali.rice.kns.web.struts.action.KualiRequestProcessor$1.doInTransaction(KualiRequestProcessor.java:496)
at org.kuali.rice.kns.web.struts.action.KualiRequestProcessor.processActionPerform(KualiRequestProcessor.java:492)
at org.kuali.rice.kns.web.struts.action.KualiRequestProcessor.processFormActionAndForward(KualiRequestProcessor.java:221)
at org.kuali.rice.kns.web.struts.action.KualiRequestProcessor.strutsProcess(KualiRequestProcessor.java:208)
at org.kuali.rice.kns.web.struts.action.KualiRequestProcessor.process(KualiRequestProcessor.java:95)
at org.kuali.rice.kns.web.struts.action.KualiActionServlet.process(KualiActionServlet.java:198)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.kuali.kfs.sys.web.filter.SessionExpirationFilter.doFilter(SessionExpirationFilter.java:45)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.kuali.rice.kew.web.UserPreferencesFilter.doFilter(UserPreferencesFilter.java:78)
at org.kuali.rice.kew.web.UserPreferencesFilter.doFilter(UserPreferencesFilter.java:62)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.kuali.rice.kew.web.UserLoginFilter.doFilter(UserLoginFilter.java:89)
at org.kuali.rice.kew.web.UserLoginFilter.doFilter(UserLoginFilter.java:77)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.kuali.rice.kew.web.BootstrapFilter.doFilter(BootstrapFilter.java:162)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.kuali.rice.kns.web.filter.ParameterFilter.doFilter(ParameterFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.kuali.kfs.sys.web.filter.DevelopmentLoginFilter.doFilter(DevelopmentLoginFilter.java:66)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.kuali.rice.krad.web.filter.HideWebInfFilter.doFilter(HideWebInfFilter.java:69)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:202)
at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:175)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:470)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at java.lang.Thread.run(Thread.java:745)

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