Improved error message

src/main/java/org/gcube/gcat/social/PortalUser.java

@@ -83,7 +83,7 @@ public class PortalUser {
 				
 				oAuthUserProfile = objectMapper.readTree(ret);
 			} catch(Exception e) {
-				throw new InternalServerErrorException(e);
+				throw new InternalServerErrorException("Unable to retrive Infrastructure User Information from Social Service", e);
 			}
 		}
 		return oAuthUserProfile;