Fixed logical bug in Connector's child class initialization method

modules/module_connection.py

@@ -45,7 +45,7 @@ class Word2ContextExplorerConnector(Connector):
         vocabulary = kwargs.get('vocabulary', None)
         context = kwargs.get('context', None)
 
-        if vocabulary is None and context is None:
+        if vocabulary is None or context is None:
             raise KeyError
 
         self.word2context_explorer = Word2Context(