[09/04 17:10] Error rendering view [org.springframework.web.servlet.view.freemarker.FreeMarkerView: name 'error/404'; URL [/WEB-INF/pages/error/404.html]] in DispatcherServlet with name 'app-servlet' org.apache.shiro.UnavailableSecurityManagerException: No SecurityManager accessible to the calling code, either bound to the org.apache.shiro.util.ThreadContext or as a vm static singleton. This is an invalid application configuration.