addressing issue #382

Author: jchanvfx

NodeGraphQt/nodes/group_node.py

@@ -149,7 +149,7 @@ def add_output(self, name='output', multi_output=True, display_name=True,
 
     def delete_input(self, port):
         if type(port) in [int, str]:
-            port = self.get_output(port)
+            port = self.get_input(port)
             if port is None:
                 return