I applied a traffic layer on the leaflet with Node.js. After several times of move & zoom event, suddenly I got an error with status code 500 continuously.
It worked normally after refreshing browser, but the same situation repeated.
Here is an error I've got.
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error that prevented it from fulfilling this request.
exception
java.lang.NullPointerException
com.mapquest.traffic.TrafficIOServlet.writeResponse(TrafficIOServlet.java:692)
com.mapquest.traffic.TrafficIOServlet.serviceAsSlave(TrafficIOServlet.java:614)
com.mapquest.traffic.TrafficIOServlet.service(TrafficIOServlet.java:331)
javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
com.mapquest.requestfilters.requestlogging.RequestLoggingFilter.doFilter(RequestLoggingFilter.java:76)
com.mapquest.platform.registry.RegistryCheckFilter.doRegistryChecking(RegistryCheckFilter.java:69)
com.mapquest.platform.registry.RegistryCheckFilter.doFilter(RegistryCheckFilter.java:43)
com.mapquest.platform.registry.RegistryFilter.doFilter(RegistryFilter.java:60)
Thank you