Tomcat v8.0 Server Failed to Start

Question

I'm trying to make a dynamic web application that runs on an apache tomcat v8.0 server in Eclipse-ee for my final uni project and am having trouble getting the server to start. It had been working fine, then seemingly for no reason stopped. I'm new to this whole web app thing, so apologies in advance if I've done anything stupid!

Here's the error message I get when attempting to start the server:

This is the server overview tab:

This is the console output when I attempt to start the server. There are some errors but I don't understand what they mean:

Jan 14, 2019 3:27:02 PM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:VulnerableWebApp' did not find a matching property.
Jan 14, 2019 3:27:02 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Server version:        Apache Tomcat/8.0.36
Jan 14, 2019 3:27:02 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Server built:          Jun 9 2016 13:55:50 UTC
Jan 14, 2019 3:27:02 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Server number:         8.0.36.0
Jan 14, 2019 3:27:02 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: OS Name:               Windows 7
Jan 14, 2019 3:27:02 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: OS Version:            6.1
Jan 14, 2019 3:27:02 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Architecture:          amd64
Jan 14, 2019 3:27:02 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Java Home:             C:\Program Files\Java\jre1.8.0_171
Jan 14, 2019 3:27:02 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: JVM Version:           1.8.0_171-b11
Jan 14, 2019 3:27:02 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: JVM Vendor:            Oracle Corporation
Jan 14, 2019 3:27:02 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: CATALINA_BASE:         F:\Stuart\eclipse-ee-workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp1
Jan 14, 2019 3:27:02 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: CATALINA_HOME:         F:\Stuart\eclipse-ee-workspace\tomcat
Jan 14, 2019 3:27:02 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Dcatalina.base=F:\Stuart\eclipse-ee-workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp1
Jan 14, 2019 3:27:02 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Dcatalina.home=F:\Stuart\eclipse-ee-workspace\tomcat
Jan 14, 2019 3:27:02 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Dwtp.deploy=F:\Stuart\eclipse-ee-workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp1\wtpwebapps
Jan 14, 2019 3:27:02 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Djava.endorsed.dirs=F:\Stuart\eclipse-ee-workspace\tomcat\endorsed
Jan 14, 2019 3:27:02 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Dfile.encoding=Cp1252
Jan 14, 2019 3:27:02 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jre1.8.0_171\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:/Program Files/Java/jre1.8.0_171/bin/server;C:/Program Files/Java/jre1.8.0_171/bin;C:/Program Files/Java/jre1.8.0_171/lib/amd64;c:\program files (x86)\common files\oracle\java\javapath;c:\programdata\oracle\java\javapath;c:\program files (x86)\intel\icls client\;c:\program files\intel\icls client\;c:\program files\common files\microsoft shared\windows live;c:\program files (x86)\common files\microsoft shared\windows live;c:\windows\system32;c:\windows;c:\windows\system32\wbem;c:\windows\system32\windowspowershell\v1.0\;c:\program files (x86)\ati technologies\ati.ace\core-static;c:\program files (x86)\windows live\shared;c:\program files (x86)\amd\ati.ace\core-static;c:\program files\intel\intel(r) management engine components\dal;c:\program files\intel\intel(r) management engine components\ipt;c:\program files (x86)\intel\intel(r) management engine components\dal;c:\program files (x86)\intel\intel(r) management engine components\ipt;c:\users\stuart\.dnx\bin;c:\program files\microsoft dnx\dnvm\;c:\program files\microsoft sql server\130\tools\binn\;f:\program files\git\cmd;f:\program files\matlab2018\bin;c:\program files\nvidia corporation\nvidia nvdlisr;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Users\Stuart\AppData\Roaming\Dashlane\6.1901.0.16461\bin\Firefox_Extension\{442718d9-475e-452a-b3e1-fb1ee16b8e9f}\components;C:\Users\Stuart\AppData\Roaming\Dashlane\6.1901.0.16461\ucrt;C:\Users\Stuart\AppData\Roaming\Dashlane\6.1901.0.16461\bin\Qt;C:\Users\Stuart\AppData\Roaming\Dashlane\6.1901.0.16461\bin\Ssl;F:\New folder (4);;.
Jan 14, 2019 3:27:02 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-nio-8080"]
Jan 14, 2019 3:27:02 PM org.apache.tomcat.util.net.NioSelectorPool getSharedSelector
INFO: Using a shared selector for servlet write/read
Jan 14, 2019 3:27:02 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["ajp-nio-8009"]
Jan 14, 2019 3:27:02 PM org.apache.tomcat.util.net.NioSelectorPool getSharedSelector
INFO: Using a shared selector for servlet write/read
Jan 14, 2019 3:27:02 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 706 ms
Jan 14, 2019 3:27:03 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
Jan 14, 2019 3:27:03 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/8.0.36
Jan 14, 2019 3:27:03 PM org.apache.catalina.core.ContainerBase startInternal
SEVERE: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/VulnerableWebApp]]
    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:915)
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:871)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1407)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1397)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/VulnerableWebApp]]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:153)
    ... 6 more
Caused by: java.lang.IllegalArgumentException: The servlets named [LoginCheck] and [Registration] are both mapped to the url-pattern [/LoginCheck] which is not permitted
    at org.apache.tomcat.util.descriptor.web.WebXml.addServletMapping(WebXml.java:308)
    at org.apache.catalina.startup.ContextConfig.processAnnotationWebServlet(ContextConfig.java:2373)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2055)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1940)
    at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1147)
    at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:779)
    at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:306)
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:95)
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5202)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
    ... 6 more

Jan 14, 2019 3:27:03 PM org.apache.catalina.core.ContainerBase startInternal
SEVERE: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]]
    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:915)
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:441)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:787)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:629)
    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:351)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:485)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:153)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1407)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1397)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:923)
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:871)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
    ... 6 more

Jan 14, 2019 3:27:03 PM org.apache.catalina.startup.Catalina start
SEVERE: The required Server component failed to start so Tomcat is unable to start.
org.apache.catalina.LifecycleException: Failed to start component [StandardServer[8005]]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:153)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:629)
    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:351)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:485)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Catalina]]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:153)
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:787)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
    ... 7 more
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina]]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:153)
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:441)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
    ... 9 more
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:923)
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
    ... 11 more

Jan 14, 2019 3:27:03 PM org.apache.coyote.AbstractProtocol pause
INFO: Pausing ProtocolHandler ["http-nio-8080"]
Jan 14, 2019 3:27:03 PM org.apache.coyote.AbstractProtocol pause
INFO: Pausing ProtocolHandler ["ajp-nio-8009"]
Jan 14, 2019 3:27:03 PM org.apache.catalina.core.StandardService stopInternal
INFO: Stopping service Catalina
Jan 14, 2019 3:27:03 PM org.apache.coyote.AbstractProtocol destroy
INFO: Destroying ProtocolHandler ["http-nio-8080"]
Jan 14, 2019 3:27:03 PM org.apache.coyote.AbstractProtocol destroy
SEVERE: Failed to destroy end point associated with ProtocolHandler ["http-nio-8080"]
java.lang.NullPointerException
    at org.apache.tomcat.util.net.NioEndpoint.releaseCaches(NioEndpoint.java:316)
    at org.apache.tomcat.util.net.NioEndpoint.unbind(NioEndpoint.java:492)
    at org.apache.tomcat.util.net.AbstractEndpoint.destroy(AbstractEndpoint.java:821)
    at org.apache.coyote.AbstractProtocol.destroy(AbstractProtocol.java:534)
    at org.apache.catalina.connector.Connector.destroyInternal(Connector.java:1023)
    at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:297)
    at org.apache.catalina.core.StandardService.destroyInternal(StandardService.java:589)
    at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:297)
    at org.apache.catalina.core.StandardServer.destroyInternal(StandardServer.java:877)
    at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:297)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:633)
    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:351)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:485)

Jan 14, 2019 3:27:03 PM org.apache.coyote.AbstractProtocol destroy
INFO: Destroying ProtocolHandler ["ajp-nio-8009"]
Jan 14, 2019 3:27:03 PM org.apache.coyote.AbstractProtocol destroy
SEVERE: Failed to destroy end point associated with ProtocolHandler ["ajp-nio-8009"]
java.lang.NullPointerException
    at org.apache.tomcat.util.net.NioEndpoint.releaseCaches(NioEndpoint.java:316)
    at org.apache.tomcat.util.net.NioEndpoint.unbind(NioEndpoint.java:492)
    at org.apache.tomcat.util.net.AbstractEndpoint.destroy(AbstractEndpoint.java:821)
    at org.apache.coyote.AbstractProtocol.destroy(AbstractProtocol.java:534)
    at org.apache.catalina.connector.Connector.destroyInternal(Connector.java:1023)
    at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:297)
    at org.apache.catalina.core.StandardService.destroyInternal(StandardService.java:589)
    at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:297)
    at org.apache.catalina.core.StandardServer.destroyInternal(StandardServer.java:877)
    at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:297)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:633)
    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:351)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:485)

And lastly here's the web.xml file. I've left it untouched so I hope this is fine:

Answer 1

I believe this is the issue

Caused by: java.lang.IllegalArgumentException: The servlets named [LoginCheck] and [Registration] are both mapped to the url-pattern [/LoginCheck] which is not permitted

Change the servlets to have 2 separate paths.

Answer 2

You have multiple servlets mapped to the same URL:

Caused by: java.lang.IllegalArgumentException: The servlets named [LoginCheck] and [Registration] are both mapped to the url-pattern [/LoginCheck] which is not permitted

Probably a copy paste error, probably you should change your URL for Registration