small fix

app.py

@@ -53,8 +53,8 @@ def call(sentence, layers, detection_threshold):
         pretty_qa_output = "\n".join(all_qas) 
     
     # also present highlighted predicates
-    qasrl_predicates = [pred_info['predicate_idx'] for pred_info in outputs['qasrl']] 
-    qanom_predicates = [pred_info['predicate_idx'] for pred_info in outputs['qanom']] 
+    qasrl_predicates = [] if 'qasrl' not in outputs else [pred_info['predicate_idx'] for pred_info in outputs['qasrl']] 
+    qanom_predicates = [] if 'qanom' not in outputs else [pred_info['predicate_idx'] for pred_info in outputs['qanom']] 
     def color(idx):
         if idx in qasrl_predicates : return "aquamarine"
         if idx in qanom_predicates : return "aqua"