Update app.py

app.py

@@ -77,7 +77,7 @@ def invoke(openai_api_key, use_rag, prompt):
                                                     return_source_documents = True)
             result = rag_chain({"query": prompt})
             result = result["result"]
-        except Error as e:
+        except AuthenticationError as e:
             gr.Error(e)
             return e
     else: