Getting NullPointerException in jboss using REST API implmentation with Apache wink framework.

Issue

• Running REST API (implemented using apache wink framework) gives a NullPointerException. Seems like Apache Wink is conflicting with JBoss REST API implmentation:

21:11:36,866 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web]. 
[default-host].[/CommonRegistrationWeb].[RestAPI]] (http-localhost/127. 
0.0.1:8080-3) JBWEB000236: Servlet.service() for servlet RestAPI threw  
exception: java.lang.NullPointerException                               
       at org.apache.wink.common.internal.http.Accept.valueOf(Accept.   
java:139) [wink-1.2.0-incubating.jar:1.2.0-incubating]                  
       at org.apache.wink.server.internal.contexts.HttpHeadersImpl.     
getAcceptHeader(HttpHeadersImpl.java:152) [wink-1.2.0-incubating.jar:   
1.2.0-incubating]                                                       
      .............
       at org.apache.wink.server.handlers.ResponseHandlersChain.handle  
(ResponseHandlersChain.java:22) [wink-1.2.0-incubating.jar:1.2.0-       
incubating]                                                             
       at org.apache.wink.server.handlers.AbstractHandlersChain.doChain 
(AbstractHandlersChain.java:63) [wink-1.2.0-incubating.jar:1.2.0-       
incubating]                                                             
............................                       
Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:653) 
[jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]                
       at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.
java:926) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]      
       at java.lang.Thread.run(Unknown Source) [rt.jar:1.8.0_73]