1 files changed, 4 insertions, 1 deletions
diff --git a/robot/common.py b/robot/common.py
index bbe3c14..45dbfc3 100644
--- a/robot/common.py
+++ b/robot/common.py
@@ -3,7 +3,10 @@
 from server.hints import Hint, HintSequence
 
 hint_type = {
+    'no_hint': Hint('no_hint'),
+    'system_error': Hint('system_error'),
+    'test_results': Hint('test_results'),
 }
 
-def hint(program, solved_problems):
+def hint(program):
     return []