Tomcat server 9.0 not starting in eclipse It showing error "Server Tomcat v9.0 Server at localhost failed to start."I have tried alot of things from changing port to uninstalling tomcat and eclipse then reinstalling it again but nothing changed,thanks in advance for your help.
few things that may help : 
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<servlet>
<servlet-name>Serv</servlet-name>
<servlet-class>com.exemplemvc.ServletControleur</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Serv</servlet-name>
<url-pattern>s</url-pattern>
</servlet-mapping>
</web-app>
nov. 25, 2018 12:13:58 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: Server version: Apache Tomcat/9.0.13 nov. 25, 2018 12:13:58 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: Server built: Nov 2 2018 14:27:55 UTC nov. 25, 2018 12:13:58 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: Server number: 9.0.13.0 nov. 25, 2018 12:13:58 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: OS Name: Windows 10 nov. 25, 2018 12:13:58 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: OS Version: 10.0 nov. 25, 2018 12:13:58 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: Architecture: amd64 nov. 25, 2018 12:13:58 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: Java Home: C:\Program Files\Java\jre1.8.0_191 nov. 25, 2018 12:13:58 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: JVM Version: 1.8.0_191-b12 nov. 25, 2018 12:13:58 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: JVM Vendor: Oracle Corporation nov. 25, 2018 12:13:58 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: CATALINA_BASE:
C:\Users\USER\eclipse-workspace.metadata.plugins\org.eclipse.wst.server.core\tmp0 nov. 25, 2018 12:13:58 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: CATALINA_HOME: C:\Users\USER\Downloads\apache-tomcat-9.0.13 nov. 25, 2018 12:13:58 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: Command line argument: -Dcatalina.base=C:\Users\USER\eclipse-workspace.metadata.plugins\org.eclipse.wst.server.core\tmp0 nov. 25, 2018 12:13:58 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: Command line argument: -Dcatalina.home=C:\Users\USER\Downloads\apache-tomcat-9.0.13 nov. 25, 2018 12:13:58 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: Command line argument: -Dwtp.deploy=C:\Users\USER\eclipse-workspace.metadata.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps nov. 25, 2018 12:13:58 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: Command line argument: -Djava.endorsed.dirs=C:\Users\USER\Downloads\apache-tomcat-9.0.13\endorsed nov. 25, 2018 12:13:58 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: Command line argument: -Dfile.encoding=MS932 nov. 25, 2018 12:13:58 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent INFOS: Loaded APR based Apache Tomcat Native library [1.2.18] using APR version [1.6.5]. nov. 25, 2018 12:13:58 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent INFOS: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true]. nov. 25, 2018 12:13:58 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent INFOS: APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true] nov. 25, 2018 12:13:58 PM org.apache.catalina.core.AprLifecycleListener initializeSSL INFOS: OpenSSL successfully initialized [OpenSSL 1.1.1 11 Sep 2018] nov. 25, 2018 12:13:58 PM org.apache.coyote.AbstractProtocol init INFOS: Initializing ProtocolHandler ["http-nio-8080"] nov. 25, 2018 12:13:58 PM org.apache.tomcat.util.net.NioSelectorPool getSharedSelector INFOS: Using a shared selector for servlet write/read nov. 25, 2018 12:13:58 PM org.apache.coyote.AbstractProtocol init INFOS: Initializing ProtocolHandler ["ajp-nio-8009"] nov. 25, 2018 12:13:58 PM org.apache.tomcat.util.net.NioSelectorPool getSharedSelector INFOS: Using a shared selector for servlet write/read nov. 25, 2018 12:13:58 PM org.apache.catalina.startup.Catalina load INFOS: Initialization processed in 893 ms nov. 25, 2018 12:13:58 PM org.apache.catalina.core.StandardService startInternal INFOS: D?marrage du service [Catalina] nov. 25, 2018 12:13:58 PM org.apache.catalina.core.StandardEngine startInternal INFOS: Starting Servlet Engine: Apache Tomcat/9.0.13 nov. 25, 2018 12:13:59 PM org.apache.catalina.core.ContainerBase startInternal GRAVE: A child container failed during start java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/EX1TP3]] at java.util.concurrent.FutureTask.report(Unknown Source) at java.util.concurrent.FutureTask.get(Unknown Source) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:951) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:831) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1432) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1422) at java.util.concurrent.FutureTask.run(Unknown Source) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:944) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:261) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:801) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.startup.Catalina.start(Catalina.java:695) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:350) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492) Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/EX1TP3]] at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:441) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1432) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1422) at java.util.concurrent.FutureTask.run(Unknown Source) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:944) ... 21 more Caused by: java.lang.IllegalArgumentException: [s] invalide dans l'association de servlet (servlet mapping) at org.apache.catalina.core.StandardContext.addServletMappingDecoded(StandardContext.java:3136) at org.apache.catalina.Context.addServletMappingDecoded(Context.java:879) at org.apache.catalina.startup.ContextConfig.configureContext(ContextConfig.java:1380) at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1191) at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:769) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:299) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5007) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ... 27 morenov. 25, 2018 12:13:59 PM org.apache.catalina.core.ContainerBase startInternal GRAVE: A child container failed during start java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: A child container failed during start at java.util.concurrent.FutureTask.report(Unknown Source) at java.util.concurrent.FutureTask.get(Unknown Source) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:951) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:261) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:801) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.startup.Catalina.start(Catalina.java:695) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:350) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492) Caused by: org.apache.catalina.LifecycleException: A child container failed during start at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:963) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:831) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1432) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1422) at java.util.concurrent.FutureTask.run(Unknown Source) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:944) ... 13 more Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/EX1TP3]] at java.util.concurrent.FutureTask.report(Unknown Source) at java.util.concurrent.FutureTask.get(Unknown Source) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:951) ... 21 more Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/EX1TP3]] at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:441) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1432) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1422) at java.util.concurrent.FutureTask.run(Unknown Source) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:944) ... 21 more Caused by: java.lang.IllegalArgumentException: [s] invalide dans l'association de servlet (servlet mapping) at org.apache.catalina.core.StandardContext.addServletMappingDecoded(StandardContext.java:3136) at org.apache.catalina.Context.addServletMappingDecoded(Context.java:879) at org.apache.catalina.startup.ContextConfig.configureContext(ContextConfig.java:1380) at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1191) at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:769) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:299) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5007) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ... 27 more
nov. 25, 2018 12:13:59 PM org.apache.catalina.startup.Catalina start GRAVE: The required Server component failed to start so Tomcat is unable to start. org.apache.catalina.LifecycleException: A child container failed during start at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:963) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:261) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:801) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.startup.Catalina.start(Catalina.java:695) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:350) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492) Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: A child container failed during start at java.util.concurrent.FutureTask.report(Unknown Source) at java.util.concurrent.FutureTask.get(Unknown Source) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:951) ... 13 more Caused by: org.apache.catalina.LifecycleException: A child container failed during start at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:963) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:831) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1432) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1422) at java.util.concurrent.FutureTask.run(Unknown Source) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:944) ... 13 more Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/EX1TP3]] at java.util.concurrent.FutureTask.report(Unknown Source) at java.util.concurrent.FutureTask.get(Unknown Source) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:951) ... 21 more Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/EX1TP3]] at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:441) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1432) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1422) at java.util.concurrent.FutureTask.run(Unknown Source) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:944) ... 21 more Caused by: java.lang.IllegalArgumentException: [s] invalide dans l'association de servlet (servlet mapping) at org.apache.catalina.core.StandardContext.addServletMappingDecoded(StandardContext.java:3136) at org.apache.catalina.Context.addServletMappingDecoded(Context.java:879) at org.apache.catalina.startup.ContextConfig.configureContext(ContextConfig.java:1380) at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1191) at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:769) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:299) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5007) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ... 27 more
nov. 25, 2018 12:13:59 PM org.apache.coyote.AbstractProtocol pause INFOS: Pausing ProtocolHandler ["http-nio-8080"] nov. 25, 2018 12:13:59 PM org.apache.coyote.AbstractProtocol pause INFOS: Pausing ProtocolHandler ["ajp-nio-8009"] nov. 25, 2018 12:13:59 PM org.apache.catalina.core.StandardService stopInternal INFOS: Arr?t du service [Catalina] nov. 25, 2018 12:13:59 PM org.apache.coyote.AbstractProtocol destroy INFOS: Destroying ProtocolHandler ["http-nio-8080"] nov. 25, 2018 12:13:59 PM org.apache.coyote.AbstractProtocol destroy INFOS: Destroying ProtocolHandler ["ajp-nio-8009"]
