Hi,

I'm using wildfly 8.2 and i'm trying to set up a custom error page for error 404.

This is my undertow subsystem configuration:

<subsystem xmlns="urn:jboss:domain:undertow:1.2">

            <buffer-cache name="default"/>

            <server name="default-server">

                <http-listener name="default" socket-binding="http" redirect-socket="https"/>

  <https-listener name="https" socket-binding="https" security-realm="SSLRealm"/>

                <host name="default-host" alias="localhost">

                    <location name="/" handler="welcome-content"/>

                    <filter-ref name="server-header"/>

                    <filter-ref name="x-powered-by-header"/>

  <filter-ref name="404-handler"/>

                </host>

            </server>

            <servlet-container name="default">

                <jsp-config/>

                <websockets/>

            </servlet-container>

            <handlers>

                <file name="welcome-content" path="${jboss.home.dir}/welcome-content"/>

            </handlers>

            <filters>

                <response-header name="server-header" header-name="Server" header-value="WildFly/8"/>

                <response-header name="x-powered-by-header" header-name="X-Powered-By" header-value="Undertow/1"/>

  <error-page name="404-handler" code="404" path="${jboss.home.dir}/welcome-content/ErrorPage.html"/>

            </filters>

        </subsystem>

When i try to access http:localhost:8080 i'm getting 500 - internal server error.

In my log i'm getting a nullpointerexception:

15:10:29,685 ERROR [io.undertow.request] (default I/O-1) Undertow request failed HttpServerExchange{ GET /}: java.lang.NullPointerException

        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:42)

        at io.undertow.server.handlers.SetHeaderHandler.handleRequest(SetHeaderHandler.java:51)

        at io.undertow.server.handlers.SetHeaderHandler.handleRequest(SetHeaderHandler.java:51)

        at io.undertow.server.handlers.NameVirtualHostHandler.handleRequest(NameVirtualHostHandler.java:53)

        at io.undertow.server.handlers.error.SimpleErrorPageHandler.handleRequest(SimpleErrorPageHandler.java:76)

        at io.undertow.server.handlers.CanonicalPathHandler.handleRequest(CanonicalPathHandler.java:49)

        at io.undertow.server.handlers.ChannelUpgradeHandler.handleRequest(ChannelUpgradeHandler.java:158)

        at io.undertow.server.Connectors.executeRootHandler(Connectors.java:197)

        at io.undertow.server.protocol.http.HttpReadListener.handleEventWithNoRunningRequest(HttpReadListener.java:181)

        at io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:108)

        at io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:49)

        at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) [xnio-api-3.3.0.Final.jar:3.3.0.Final]

        at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66) [xnio-api-3.3.0.Final.jar:3.3.0.Final]

        at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:88) [xnio-nio-3.3.0.Final.jar:3.3.0.Final]

        at org.xnio.nio.WorkerThread.run(WorkerThread.java:539) [xnio-nio-3.3.0.Final.jar:3.3.0.Final]