Raised exception while starting the application. Fix the error and restart.

Message
Failed whilst adding the schema information. Exception message if any is /app/tomcat/webapps/geonetwork/WEB-INF/data/data/resources/xml/schemas/dublin-core
Handler
org.fao.geonet.Geonetwork
Exception
OperationAbortedEx : Failed whilst adding the schema information. Exception message if any is /app/tomcat/webapps/geonetwork/WEB-INF/data/data/resources/xml/schemas/dublin-core
Stack
OperationAbortedEx : Failed whilst adding the schema information. Exception message if any is /app/tomcat/webapps/geonetwork/WEB-INF/data/data/resources/xml/schemas/dublin-core
	at org.fao.geonet.kernel.SchemaManager.processSchema(SchemaManager.java:1287)
	at org.fao.geonet.kernel.SchemaManager.configure(SchemaManager.java:226)
	at org.fao.geonet.Geonetwork.start(Geonetwork.java:243)
	at jeeves.server.JeevesEngine.initAppHandler(JeevesEngine.java:448)
	at jeeves.server.JeevesEngine.init(JeevesEngine.java:191)
	at jeeves.server.sources.http.JeevesServlet.init(JeevesServlet.java:84)
	at javax.servlet.GenericServlet.init(GenericServlet.java:158)
	at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1144)
	at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1091)
	at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:985)
	at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4885)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5199)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:743)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:719)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:714)
	at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1125)
	at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1859)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.nio.file.AccessDeniedException: /app/tomcat/webapps/geonetwork/WEB-INF/data/data/resources/xml/schemas/dublin-core
	at sun.nio.fs.UnixException.translateToIOException(UnixException.java:84)
	at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
	at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
	at sun.nio.fs.UnixFileSystemProvider.newDirectoryStream(UnixFileSystemProvider.java:427)
	at java.nio.file.Files.newDirectoryStream(Files.java:457)
	at java.nio.file.FileTreeWalker.visit(FileTreeWalker.java:300)
	at java.nio.file.FileTreeWalker.walk(FileTreeWalker.java:322)
	at java.nio.file.Files.walkFileTree(Files.java:2662)
	at java.nio.file.Files.walkFileTree(Files.java:2742)
	at org.fao.geonet.utils.IO.deleteFileOrDirectory(IO.java:211)
	at org.fao.geonet.kernel.SchemaManager.copySchemaXSDsToWebApp(SchemaManager.java:1788)
	at org.fao.geonet.kernel.SchemaManager.addSchema(SchemaManager.java:1008)
	at org.fao.geonet.kernel.SchemaManager.processSchema(SchemaManager.java:1280)
	... 22 more