deprecated link resolution crash caught

server.js

@@ -53,9 +53,8 @@ app.post('/note', function (req, res) {
 });
 
 app.get("/:year/:month/:day/:title", function (req, res) {
-  var P = req.params;
-  storage.getNoteId(P.year + "/" + P.month + "/" + P.day + "/" + P.title)
-    .then(id => res.redirect("/" + id));
+  var P = req.params, url = P.year + "/" + P.month + "/" + P.day + "/" + P.title;
+  storage.getNoteId(url).then(note => note ? res.redirect("/" + id) : notFound(res));
 });
 
 app.get(/\/([a-z0-9]+\/edit)/, function (req, res) {

src/storage.js

@@ -28,7 +28,7 @@ module.exports.getNoteId = deprecatedId => {
   console.log("resolving deprecated Id", deprecatedId);
   return Note.findOne({
     where: { deprecatedId: deprecatedId }
-  }).then(note => note.id);
+  });
 }
 
 var generateId = () => [1, 1, 1, 1, 1]