Add fogotten 'next()' in /enrollment

src/libs/routes/enrollment.js

@@ -334,6 +334,7 @@ enrollmentApp.get('/', rqf.parse(), rqf.build(), (req, res, next) => {
             delete result.period_id;
         }
     });
+    next();
 }, response('enrollment'));
 
 module.exports = enrollmentApp;