Update app.py

app.py

@@ -103,7 +103,7 @@ class SubjectiveTest:
             for key in question_patterns:
                 question_patterns[key] = [pattern + " {topic}" for pattern in question_patterns[key]]
 
-        return question_patterns.get(entity_label, [""])
+        return question_patterns.get(entity_label)
 
     def generate_test(self, topic=None):
         doc = self.nlp(self.summary)