Update app.py

app.py

@@ -64,7 +64,7 @@ def initialize_chroma(splits):
         rag_chain = (
             {"context": retriever | format_docs, "question": RunnablePassthrough()}
             | prompt
-            | llm
+            | llm = ChatGroq(model="llama3-8b-8192", groq_api_key=groq_api_key)
             | StrOutputParser()
         )
         return rag_chain