A websphere 6.1 server is running a struts application that seems to be working fine. In the logs, however, I'm seeing the following error message, which is being continually emailed to the support staff.

com.ibm.ws.webcontainer.webapp.WebAppErrorReport: SRVE0190E: File not found: {0}
at com.ibm.ws.webcontainer.webapp.WebAppDispatcherContext.sendError(WebAppDispatcherContext.java:536)
at com.ibm.ws.webcontainer.srt.SRTServletResponse.sendError(SRTServletResponse.java:930)
at com.ibm.ws.webcontainer.extension.DefaultExtensionProcessor.handleRequest(DefaultExtensionProcessor.java:524)
at com.ibm.ws.wswebcontainer.extension.DefaultExtensionProcessor.handleRequest(DefaultExtensionProcessor.java:111)
at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3129)
at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:238)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:811)
at com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1433)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:93)

I can narrow down the issue to a single Action and JSP, which are too big to show here, but here's the action definition in struts-config.xml:

    <action
            path="/HappyDefaultThing"
            name="HappyDefaultThingActionForm"
            type="com.foo.webadministration.action.HappyDefaultThingAction"
            validate="true"
            input="/WaAssignDefaultHappyThing.jsp"
            scope="session">
            <forward name="success" path="/WaAssignDefaultHappyThing.jsp"/>
            <forward name="failure" path="/WaAssignDefaultHappyThing.jsp"/>
    </action>

As far as I can see, nothing is missing, and everything necessary is being found, but the logs say "File not found: {0}"

What is "{0}"?? The stack trace only shows IBMs code, which I can't see the source of, and therefore can't trace.

Is this a bug in the websphere code? I'd appreciate any help.