Add type attribute check to prevent AttributeError in _iframe_resize function

Add type attribute check to prevent AttributeError in _iframe_resize function

basthon-console#7 (closed) resolution

packages/kernel-python3/src/modules/tutor/tutor/__init__.py

@@ -75,8 +75,11 @@ def _iframe_resize(event, *args):
     if data is None:
         return
 
-    type = data.type
-    if type != "pytutor-iframe-resize":
+    if 'type' in data:
+        type = data['type']
+        if type != "pytutor-iframe-resize":
+            return
+    else:
         return
 
     target = data.target