REST Works on some computers - rest

Question

This is really confusing, i have a rest service that works on some computers but refuses to work on others, no idea why.
The project is using Maven, EJB and glassfish
This is the rest service:
#Path("/")
public class ArticleService {
#EJB
private LocalArticle articleEJB;
#GET
#Produces(MediaType.APPLICATION_XML)
#Path("article/{articleId}")
public Article getArticleXML(#PathParam("articleId") int id) {
return articleEJB.getArticleById(id);
}
#GET
#Produces(MediaType.APPLICATION_JSON)
#Path("article/{articleId}")
public Article getArticleJSON(#PathParam("articleId") int id) {
return articleEJB.getArticleById(id);
}
}
The return value is a object, and if i instead return article.getName i get a 200 response, however if i try to return the entire object i get 500
Here is a rest management class(I'm not sure what this does, I followed an example from a book):
#ApplicationPath("rest")
public class ArticleMgmtRESTApplication extends ResourceConfig {
public ArticleMgmtRESTApplication () {
packages("se.alager.rest.ws.services");
}
}
}
Here is the Article in question:
#Entity
#NamedQueries({
#NamedQuery(name="Article.findAll", query="SELECT a FROM Article a"),
#NamedQuery(name="Article.findById", query="SELECT a FROM Article a WHERE a.id = :id")
})
#XmlRootElement
#XmlAccessorType(XmlAccessType.FIELD)
public class Article implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#Column(name="id_article")
#XmlAttribute
private int id;
private int amount;
private String description;
private String name;
}
This exact code works flawlessly for mt friend, but I can't seem to get it to work, any ideas as to why?
Here is the Glassfish log for the error (ther was some 500 more lines of log, I hope this is relevant, I have no idea what I'm doing here)
[2016-10-20T16:31:44.140+0200] [glassfish 4.1]
[INFO] [] [org.jboss.weld.Bootstrap]
[tid: _ThreadID=142 _ThreadName=admin-listener(7)] [timeMillis: 1476973904140]
[levelValue: 800] [[
WELD-000119: Not generating any bean definitions from
org.glassfish.jersey.server.internal.inject.ParamConverters$CharacterProvider
because of underlying class loading error: Type [unknown] not found.
If this is unexpected, enable DEBUG logging to see the full error.]]
[2016-10-20T16:31:45.000+0200] [glassfish 4.1] [INFO] []
[org.glassfish.jersey.servlet.init.JerseyServletContainerInitializer]
[tid: _ThreadID=142 _ThreadName=admin-listener(7)] [timeMillis: 1476973905000]
[levelValue: 800] [[
Registering the Jersey servlet application, named
se.alager.rest.ws.ManagementRESTApplication,
at the servlet mapping /rest/*, with the Application class of the same name.]]