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Cannot invoke method getHeaders() on null object

Error 500: Internal Server Error
URI
/pointToPointIntent/save
Class
java.lang.NullPointerException
Message
null
Caused by
Cannot invoke method getHeaders() on null object
Around line 57 of grails-app\controllers\ibn\manager\PointToPointIntentController.groovy
54: else
55: response = clientONOS.createSlicingIntent(pointToPointIntent)
56:
57: pointToPointIntent.intentKey = response.getHeaders().getLocation().toString().split("/")[response.getHeaders().getLocation().toString().split("/").length-1]
58:
59: pointToPointIntentService.save(pointToPointIntent)
60:
Trace
Line | Method
->> 211 | invoke in org.grails.core.DefaultGrailsControllerClass$ReflectionInvoker

| 188 | invoke in org.grails.core.DefaultGrailsControllerClass
| 90 | handle . . . . . in org.grails.web.mapping.mvc.UrlMappingsInfoHandlerAdapter
| 967 | doDispatch in org.springframework.web.servlet.DispatcherServlet
| 901 | doService . . . in ''
| 970 | processRequest in org.springframework.web.servlet.FrameworkServlet
| 872 | doPost . . . . . in ''
| 846 | service in ''
| 55 | doFilterInternal in org.springframework.boot.web.filter.ApplicationContextHeaderFilter
| 77 | doFilterInternal in org.grails.web.servlet.mvc.GrailsWebRequestFilter
| 67 | doFilterInternal in org.grails.web.filters.HiddenHttpMethodFilter
| 1149 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 624 | run . . . . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 748 | run in java.lang.Thread

Caused by NullPointerException: Cannot invoke method getHeaders() on null object
->> 57 | save in PointToPointIntentController.groovy

| 211 | invoke in org.grails.core.DefaultGrailsControllerClass$ReflectionInvoker
| 188 | invoke . . . . . in org.grails.core.DefaultGrailsControllerClass
| 90 | handle in org.grails.web.mapping.mvc.UrlMappingsInfoHandlerAdapter
| 967 | doDispatch . . . in org.springframework.web.servlet.DispatcherServlet
| 901 | doService in ''
| 970 | processRequest . in org.springframework.web.servlet.FrameworkServlet
| 872 | doPost in ''
| 846 | service . . . . in ''
| 55 | doFilterInternal in org.springframework.boot.web.filter.ApplicationContextHeaderFilter
| 77 | doFilterInternal in org.grails.web.servlet.mvc.GrailsWebRequestFilter
| 67 | doFilterInternal in org.grails.web.filters.HiddenHttpMethodFilter
| 1149 | runWorker . . . in java.util.concurrent.ThreadPoolExecutor
| 624 | run in java.util.concurrent.ThreadPoolExecutor$Worker
^ 748 | run . . . . . . in java.lang.Thread