Unexpected RuntimeException

wicket.WicketRuntimeException: Could not create home page
at wicket.protocol.http.WebRequestCycle.homePage(WebRequestCycle.java:252)
at wicket.protocol.http.WebRequestCycle.parseRequest(WebRequestCycle.java:118)
at wicket.RequestCycle.request(RequestCycle.java:357)
at wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:165)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:126)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:103)
at com.caucho.server.http.FilterChainServlet.doFilter(FilterChainServlet.java:96)
at com.caucho.server.http.Invocation.service(Invocation.java:312)
at com.caucho.server.http.CacheInvocation.service(CacheInvocation.java:135)
at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:221)
at com.caucho.server.http.HttpRequest.handleConnection(HttpRequest.java:163)
at com.caucho.server.TcpConnection.run(TcpConnection.java:137)
at java.lang.Thread.run(Thread.java:534)
Caused by: wicket.WicketRuntimeException: Can't instantiate page using constructor public com.softfobia.thunder.Index(wicket.PageParameters) and argument
at wicket.DefaultPageFactory.newPage(DefaultPageFactory.java:148)
at wicket.DefaultPageFactory.newPage(DefaultPageFactory.java:76)
at wicket.protocol.http.WebRequestCycle.newPage(WebRequestCycle.java:334)
at wicket.protocol.http.WebRequestCycle.homePage(WebRequestCycle.java:248)
... 12 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedConstructorAccessor14.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
at wicket.DefaultPageFactory.newPage(DefaultPageFactory.java:134)
... 15 more
Caused by: java.lang.NullPointerException
at com.softfobia.components.MenuPanel.<init>(MenuPanel.java:69)
at com.softfobia.components.SxColumnPanel.<init>(SxColumnPanel.java:61)
at com.softfobia.components.Template.<init>(Template.java:33)
at com.softfobia.components.Template.<init>(Template.java:21)
at com.softfobia.parsec.forminput.FormInput.<init>(FormInput.java:80)
at com.softfobia.components.Home.<init>(Home.java:24)
at com.softfobia.components.Home.<init>(Home.java:18)
at com.softfobia.thunder.Index.<init>(Index.java:21)
... 19 more