diff --git a/modules/qmining/qmining.js b/modules/qmining/qmining.js
index a4eb481..4eb7acd 100644
--- a/modules/qmining/qmining.js
+++ b/modules/qmining/qmining.js
@@ -297,7 +297,13 @@ app.get('/ask', function (req, res) {
   } else {
     if (req.query.q && req.query.data) {
       let subj = req.query.subj || ''
-      let question = decodeURIComponent(req.query.q)
+      let question
+      try {
+        question = decodeURIComponent(req.query.q)
+      } catch (e) {
+        console.err(req.query)
+        throw e
+      }
       let recData = {}
       try {
         recData = JSON.parse(req.query.data)
diff --git a/utils/question-classes b/utils/question-classes
index e84ff44..a117239 160000
--- a/utils/question-classes
+++ b/utils/question-classes
@@ -1 +1 @@
-Subproject commit e84ff4451251f3e8403ebb8b31ebd13d7830e44a
+Subproject commit a117239f35610520706e402382c3911d422d743e