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
	ListDevicesiSpeech.doPost(ListDevicesiSpeech.java:51)
	ListDevicesiSpeech.doGet(ListDevicesiSpeech.java:37)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.29 logs.

Apache Tomcat/7.0.29