fix random error

src/main/java/mops/gruppen2/controller/Gruppen2Controller.java

@@ -23,6 +23,7 @@ import org.springframework.web.server.ResponseStatusException;
 import javax.annotation.security.RolesAllowed;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Map;
 
 
 @Controller
@@ -113,6 +114,7 @@ public class Gruppen2Controller {
             model.addAttribute("group", group);
             model.addAttribute("roles", group.getRoles());
             model.addAttribute("user", user);
+            model.addAttribute("userrole", group.getRoles().get(user.getUser_id()));
             model.addAttribute("admin", Role.ADMIN);
             return "detailsMember";
         }