localhost:8983/solr error message

solr.log

HTTP ERROR 500

Problem accessing /solr/. Reason:

    Severe errors in solr configuration.

Check your log files for more detailed information on what may be wrong.

If you want solr to continue after configuration errors, change: 

 <abortOnConfigurationError>false</abortOnConfigurationError>

in null

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java.lang.RuntimeException: Can't find resource 'schema.xml' in classpath or '/usr/share/solr/conf/', cwd=/var/cache/jetty/tmp
	at org.apache.solr.core.SolrResourceLoader.openResource(SolrResourceLoader.java:262)
	at org.apache.solr.core.SolrResourceLoader.openSchema(SolrResourceLoader.java:222)
	at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:94)
	at org.apache.solr.core.SolrCore.<init>(SolrCore.java:521)
	at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:137)
	at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:83)
	at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:97)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:662)
	at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
	at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
	at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:518)
	at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
	at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
	at org.mortbay.jetty.Server.doStart(Server.java:224)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:985)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:622)
	at org.mortbay.start.Main.invokeMain(Main.java:194)
	at org.mortbay.start.Main.start(Main.java:534)
	at org.mortbay.jetty.start.daemon.Bootstrap.start(Bootstrap.java:30)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:622)
	at org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:243)
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