[xwiki-users] Component manager has not been initialized before lookup for [org.xwiki.model.reference.DocumentReferenceResolver< java.lang.String >] for hint [currentmixed]

Hi, I installed the xwiki latest version i.e 5.1 war file under tomcat and getting the below error when i hit the deployed xwiki from browser. I am not sure what i missed here? java.lang.RuntimeException: Component manager has not been initialized before lookup for [org.xwiki.model.reference.DocumentReferenceResolver< java.lang.String >] for hint [currentmixed] at com.xpn.xwiki.web.Utils.getComponent(Utils.java:700) at com.xpn.xwiki.XWikiContext.<init>(XWikiContext.java:151) at com.xpn.xwiki.web.Utils.prepareContext(Utils.java:382) at com.xpn.xwiki.web.XWikiAction.initializeXWikiContext(XWikiAction.java:418) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:125) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:120) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:144) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:66) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilt