Descritores de Implantação Inválidos no arquivo do descritor de implantação WEB-INF / web.xml no archive

Eu estou trabalhando no projeto Java, que está usando o servidor GlassFish.não há erro no projeto, mas quando eu tentei executá-lo, ele está mostrando esse erro_

SEVERE: DPL8015: Invalid Deployment Descriptors in Deployment descriptor file WEB-INF/web.xml in archive [web]. Line 9 Column 22 -- cvc-complex-type.2.4.d: Invalid content was found starting with element 'description'. No child element is expected at this point. SEVERE: DPL8005: Deployment Descriptor parsing failure : cvc-complex-type.2.4.d: Invalid content was found starting with element 'description'. No child element is expected at this point. SEVERE: Exception while deploying the app java.io.IOException: org.xml.sax.SAXParseException: cvc-complex-type.2.4.d: Invalid content was found starting with element 'description'. No child element is expected at this point. at org.glassfish.javaee.core.deployment.DolProvider.load(DolProvider.java:170) at org.glassfish.javaee.core.deployment.DolProvider.load(DolProvider.java:79) at com.sun.enterprise.v3.server.ApplicationLifecycle.loadDeployer(ApplicationLifecycle.java:612) Caused by: org.xml.sax.SAXParseException: cvc-complex-type.2.4.d: Invalid content was found starting with element 'description'. No child element is expected at this point. at com.sun.enterprise.deployment.io.DeploymentDescriptorFile.read(DeploymentDescriptorFile.java:304) at com.sun.enterprise.deployment.io.DeploymentDescriptorFile.read(DeploymentDescriptorFile.java:225) at com.sun.enterprise.deployment.archivist.Archivist.readStandardDeploymentDescriptor(Archivist.java:614) at com.sun.enterprise.deployment.archivist.Archivist.readDeploymentDescriptors(Archivist.java:366) at com.sun.enterprise.deployment.archivist.Archivist.open(Archivist.java:238) at com.sun.enterprise.deployment.archivist.Archivist.open(Archivist.java:247) at com.sun.enterprise.deployment.archivist.Archivist.open(Archivist.java:208) at com.sun.enterprise.deployment.archivist.ApplicationFactory.openArchive(ApplicationFactory.java:148) 

o que deu errado, alguém está enfrentando esse problema?

 Discriptor  tiles-definitions /WEB-INF/tiles.xml  Tiles configuration definition files and a listener need to be defined. the listener will initialize JspTilesViewHandlerImpl with tiles definitions.