Update app.py

app.py

@@ -46,7 +46,7 @@ def on_submit(event, contents, ):
 
             # Initialize LangChain OpenAI
             index = VectorStoreIndex.from_documents(documents)
-            llm = OpenAI(openai_api_key="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", temperature=0, streaming = True
+            llm = OpenAI(openai_api_key=apikey.value, temperature=0, streaming = True
                          )
 
             # Initialize ConversationBufferMemory