Struts 2: action not found

Olá, estou tendo o seguinte erro ao executar a aplicação:

Action class [action.LoginAction] not found - action - file:/C:/workspace2015/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/sapc-www/WEB-INF/classes/struts.xml:8:51 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.verifyAction(XmlConfigurationProvider.java:374) at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addAction(XmlConfigurationProvider.java:329) at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:429) at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadPackages(XmlConfigurationProvider.java:239) at org.apache.struts2.config.StrutsXmlConfigurationProvider.loadPackages(StrutsXmlConfigurationProvider.java:111) at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reload(DefaultConfiguration.java:152) at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:52) at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:395) at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:452) at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:205) at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:273) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:254) at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:372) at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:98) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4461) at org.apache.catalina.core.StandardContext$2.call(StandardContext.java:5133) at org.apache.catalina.core.StandardContext$2.call(StandardContext.java:5128) at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) 16/02/2011 15:52:00 org.apache.catalina.core.StandardContext startInternal GRAVE: Error filterStart 16/02/2011 15:52:00 org.apache.catalina.core.StandardContext startInternal GRAVE: Context [/sapc-www] startup failed due to previous errors 16/02/2011 15:52:00 org.apache.coyote.AbstractProtocolHandler start INFO: Starting ProtocolHandler ["http-bio-8080"] 16/02/2011 15:52:00 org.apache.coyote.AbstractProtocolHandler start INFO: Starting ProtocolHandler ["ajp-bio-8009"] 16/02/2011 15:52:00 org.apache.catalina.startup.Catalina start INFO: Server startup in 12392 ms

Alguém teria uma idéia de como posso resolver este problema?

Verifique se LoginAction Action class [action.LoginAction] not found - action - existe no pacote action.

Existe e está mapeada.