I am getting below logs when application is getting server connection lost and then session expired post that.
2025-05-29 13:51:58,123 DEBUG i.j.u.App.init:207 - [ajp-nio-0.0.0.0-8009-exec-128] Initializing application
2025-05-29 13:51:58,167 DEBUG i.j.u.n.n.NoopNavigationHandler.doHandle:43 - [ajp-nio-0.0.0.0-8009-exec-128] Unable to navigate to empty route: 'NavigationState{root=''}'
2025-05-29 13:54:00,002 DEBUG i.j.u.s.v.JmixVaadinServletService.lambda$new$84f5fb8$1:115 - [Catalina-utility-2] HttpSession destroyed: org.apache.catalina.session.StandardSessionFacade@7208c63d
2025-05-29 13:54:00,013 DEBUG i.j.u.s.v.JmixVaadinServletService.lambda$new$84f5fb8$1:115 - [Catalina-utility-2] HttpSession destroyed: org.apache.catalina.session.StandardSessionFacade@48d60f8d
may have happened because the auth cookie expiried as the site was loading too long
vaadinServlet/PUSH-5