Issue

I am receiving the following errors for my war-file in the logs:-

17:10:45,498 ERROR [org.jboss.as.server.deployment.scanner] (DeploymentScanner-threads - 1) {"JBAS014653: Composite operation failed and was rolled back. Steps that failed:" => {"Operation step-2" => {"JBAS014671: Failed services" => {"jboss.deployment.unit.\"xxx.war\".POST_MODULE" => "org.jboss.msc.service.StartException 
in service jboss.deployment.unit.\"xxx.war\".POST_MODULE: JBAS018733: Failed to process phase POST_MODULE of deployment \"xxx.war\"
    Caused by: java.lang.RuntimeException: JBAS018757: Error getting reflective information for class org.jboss.security.negotiation.toolkit.BasicNegotiationServlet with ClassLoader ModuleClassLoader for Module \"deployment.xxx.war:main\" from Service Module Loader
    Caused by: java.lang.NoClassDefFoundError: org/jboss/security/negotiation/NegotiationException
    Caused by: java.lang.ClassNotFoundException: org.jboss.security.negotiation.NegotiationException from [Module \"deployment.xxx.war:main\" from Service Module Loader]"}}}}