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Error Occurred While Processing Request

Element X-Forwarded-For is undefined in a CFML structure referenced as part of an expression.

 
The error occurred in C:/websites/includes/security/block_access.cfm: line 21
19 : <cfparam name="aips_path" default="C:\allowed_ips.txt" type="string"/>
20 : <cfset log_path="" />
21 : <cfset ipadd = Trim(ListFirst(GetHttpRequestData().headers["X-Forwarded-For"])) />
22 : 
23 : <cfif len(cgi.script_name) GT 2 AND fileexists("#aips_path#")>

Resources:

Browser   CCBot/2.0 (http://commoncrawl.org/faq/)
Remote Address   54.196.107.247
Referrer  
Date/Time   29-May-17 05:21 AM
Stack Trace
at cfblock_access2ecfm1906826866.runPage(C:/websites/includes/security/block_access.cfm:21) at cfApplication2ecfm1804277692.runPage(C:/websites/Application.cfm:1190)

coldfusion.runtime.UndefinedElementException: Element X-Forwarded-For is undefined in a CFML structure referenced as part of an expression.
	at coldfusion.runtime.CfJspPage.ArrayGetAt(CfJspPage.java:972)
	at coldfusion.runtime.CfJspPage._arrayGetAt(CfJspPage.java:983)
	at coldfusion.runtime.CfJspPage._arrayGetAt(CfJspPage.java:978)
	at cfblock_access2ecfm1906826866.runPage(C:\websites\includes\security\block_access.cfm:21)
	at coldfusion.runtime.CfJspPage.invoke(CfJspPage.java:246)
	at coldfusion.tagext.lang.IncludeTag.handlePageInvoke(IncludeTag.java:736)
	at coldfusion.tagext.lang.IncludeTag.doStartTag(IncludeTag.java:572)
	at coldfusion.runtime.CfJspPage._emptyTcfTag(CfJspPage.java:3000)
	at cfApplication2ecfm1804277692.runPage(C:\websites\Application.cfm:1190)
	at coldfusion.runtime.CfJspPage.invoke(CfJspPage.java:246)
	at coldfusion.tagext.lang.IncludeTag.handlePageInvoke(IncludeTag.java:736)
	at coldfusion.tagext.lang.IncludeTag.doStartTag(IncludeTag.java:572)
	at coldfusion.filter.CfincludeFilter.invoke(CfincludeFilter.java:65)
	at coldfusion.filter.CfincludeFilter.include(CfincludeFilter.java:33)
	at coldfusion.filter.ApplicationFilter.invoke(ApplicationFilter.java:391)
	at coldfusion.filter.RequestMonitorFilter.invoke(RequestMonitorFilter.java:42)
	at coldfusion.filter.MonitoringFilter.invoke(MonitoringFilter.java:40)
	at coldfusion.filter.PathFilter.invoke(PathFilter.java:153)
	at coldfusion.filter.ExceptionFilter.invoke(ExceptionFilter.java:94)
	at coldfusion.filter.BrowserDebugFilter.invoke(BrowserDebugFilter.java:78)
	at coldfusion.filter.ClientScopePersistenceFilter.invoke(ClientScopePersistenceFilter.java:28)
	at coldfusion.filter.BrowserFilter.invoke(BrowserFilter.java:38)
	at coldfusion.filter.NoCacheFilter.invoke(NoCacheFilter.java:58)
	at coldfusion.filter.GlobalsFilter.invoke(GlobalsFilter.java:38)
	at coldfusion.filter.DatasourceFilter.invoke(DatasourceFilter.java:22)
	at coldfusion.filter.CachingFilter.invoke(CachingFilter.java:62)
	at coldfusion.CfmServlet.service(CfmServlet.java:219)
	at coldfusion.bootstrap.BootstrapServlet.service(BootstrapServlet.java:89)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at coldfusion.monitor.event.MonitoringServletFilter.doFilter(MonitoringServletFilter.java:42)
	at coldfusion.bootstrap.BootstrapFilter.doFilter(BootstrapFilter.java:46)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:466)
	at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:197)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Unknown Source)