CFWheels 错误：元素返回值在 LOC 中未定义

如何解决CFWheels 错误：元素返回值在 LOC 中未定义

我有一个使用 CFWheels v. 1.3.3 的旧网站 它使用 ColdFusion 2018 托管。 几年来我没有更改网站上的任何内容，直到最近出现此错误时，一切似乎都运行良好：

处理请求时发生错误 元素 RETURNVALUE 在 LOC 中未定义。

错误发生在 D:/home/mysite.com/wwwroot/wheels/events/onerror.cfm: line 19

18 :    <cfoutput>
19 :        #loc.returnValue#
20 :    </cfoutput>
21 : </cffunction>```

Here's the stack trace:
Stack Trace
at cfonerror2ecfm930916195$funcONERROR.runFunction(D:/home/mysite.com/wwwroot/wheels/events/onerror.cfm:19)

coldfusion.runtime.UndefinedElementException: Element RETURNVALUE is undefined in LOC.
    at coldfusion.runtime.DotResolver.resolveSplitNameInMap(DotResolver.java:185)
    at coldfusion.runtime.CfJspPage._resolve(CfJspPage.java:2362)
    at coldfusion.runtime.CfJspPage._resolveAndAutoscalarize(CfJspPage.java:2685)
    at coldfusion.runtime.CfJspPage._resolveAndAutoscalarize(CfJspPage.java:2675)
    at coldfusion.runtime.CfJspPage._resolveAndAutoscalarize(CfJspPage.java:2655)
    at cfonerror2ecfm930916195$funcONERROR.runFunction(D:\home\mysite.com\wwwroot\wheels\events\onerror.cfm:19)
    at coldfusion.runtime.UDFMethod.invoke(UDFMethod.java:553)
    at coldfusion.runtime.UDFMethod$ReturnTypeFilter.invoke(UDFMethod.java:484)
    at coldfusion.runtime.UDFMethod$ArgumentCollectionFilter.invoke(UDFMethod.java:447)
    at coldfusion.filter.FunctionAccessFilter.invoke(FunctionAccessFilter.java:95)
    at coldfusion.runtime.UDFMethod.runFilterChain(UDFMethod.java:398)
    at coldfusion.runtime.UDFMethod.runFilterChain(UDFMethod.java:371)
    at coldfusion.runtime.UDFMethod.invoke(UDFMethod.java:287)
    at coldfusion.runtime.TemplateProxy.invoke(TemplateProxy.java:830)
    at coldfusion.runtime.TemplateProxy.invoke(TemplateProxy.java:613)
    at coldfusion.runtime.TemplateProxy.invoke(TemplateProxy.java:438)
    at coldfusion.runtime.AppEventInvoker.invoke(AppEventInvoker.java:115)
    at coldfusion.runtime.AppEventInvoker.onError(AppEventInvoker.java:524)
    at coldfusion.filter.ApplicationFilter.invoke(ApplicationFilter.java:647)
    at coldfusion.filter.RequestMonitorFilter.invoke(RequestMonitorFilter.java:43)
    at coldfusion.filter.MonitoringFilter.invoke(MonitoringFilter.java:40)
    at coldfusion.filter.PathFilter.invoke(PathFilter.java:162)
    at coldfusion.filter.IpFilter.invoke(IpFilter.java:45)
    at coldfusion.filter.ExceptionFilter.invoke(ExceptionFilter.java:96)
    at coldfusion.filter.ClientScopePersistenceFilter.invoke(ClientScopePersistenceFilter.java:28)
    at coldfusion.filter.browserFilter.invoke(browserFilter.java:38)
    at coldfusion.filter.NoCacheFilter.invoke(NoCacheFilter.java:60)
    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:226)
    at coldfusion.bootstrap.BootstrapServlet.service(BootstrapServlet.java:311)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at coldfusion.monitor.event.MonitoringServletFilter.doFilter(MonitoringServletFilter.java:46)
    at coldfusion.bootstrap.BootstrapFilter.doFilter(BootstrapFilter.java:47)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357)
    at org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:451)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:853)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1587)
    at org.apache.tomcat.util.net.socketProcessorBase.run(SocketProcessorBase.java:49)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.base/java.lang.Thread.run(Thread.java:834)

解决方法

loc 是一个对象，代码期望它有一个名为 returnValue 的属性。错误表明对象上不存在名称为 returnValue 的属性。

查看 /wheels/events/onerror.cfm 然后返回到定义 /wheels/global/cfml.cfm 的 $simpleLock 文件告诉我，配置可能存在一些潜在问题。很难确定下来。最安全的选择是重新启动应用程序。一般通过 URL 参数完成。如果您无法解决这个问题，也许只需重新启动 ColdFusion 实例并希望它修复它。

最后，ColdFusion 很难调用一个组件，但很难判断哪个没有更多错误输出。