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

Message
Failed whilst adding the schema information. Exception message if any is /opt/tomcat/webapps/geonetwork/WEB-INF/data/data/resources/xml/schemas/iso19115-3.2018
Handler
org.fao.geonet.Geonetwork
Exception
OperationAbortedEx : Failed whilst adding the schema information. Exception message if any is /opt/tomcat/webapps/geonetwork/WEB-INF/data/data/resources/xml/schemas/iso19115-3.2018
Stack
OperationAbortedEx : Failed whilst adding the schema information. Exception message if any is /opt/tomcat/webapps/geonetwork/WEB-INF/data/data/resources/xml/schemas/iso19115-3.2018
	at org.fao.geonet.kernel.SchemaManager.processSchema(SchemaManager.java:1301)
	at org.fao.geonet.kernel.SchemaManager.configure(SchemaManager.java:224)
	at org.fao.geonet.Geonetwork.start(Geonetwork.java:245)
	at jeeves.server.JeevesEngine.initAppHandler(JeevesEngine.java:447)
	at jeeves.server.JeevesEngine.init(JeevesEngine.java:190)
	at jeeves.server.sources.http.JeevesServlet.init(JeevesServlet.java:80)
	at javax.servlet.GenericServlet.init(GenericServlet.java:158)
	at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1134)
	at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1089)
	at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:983)
	at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4871)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5180)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:717)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:690)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:705)
	at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:978)
	at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1849)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
	at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:112)
	at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:773)
	at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:427)
	at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1576)
	at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:309)
	at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
	at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:423)
	at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:366)
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:936)
	at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
	at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909)
	at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:633)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:343)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:474)
Caused by: java.nio.file.AccessDeniedException: /opt/tomcat/webapps/geonetwork/WEB-INF/data/data/resources/xml/schemas/iso19115-3.2018
	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:1854)
	at org.fao.geonet.kernel.SchemaManager.addSchema(SchemaManager.java:1009)
	at org.fao.geonet.kernel.SchemaManager.processSchema(SchemaManager.java:1294)
	... 50 more