Update app.py

app.py

@@ -54,7 +54,7 @@ model = AutoModelForCausalLM.from_pretrained(model_id)
 # model = AutoModel.from_pretrained("TheBloke/zephyr-7B-beta-GGUF")
 
 
-llm = CTransformers(
+llm_model = CTransformers(
     model="TheBloke/zephyr-7B-beta-GGUF",
     model_type="mistral",
     max_new_tokens=4384,
@@ -87,7 +87,7 @@ db.get()
 retriever = db.as_retriever()
 
 global qa 
-qa = RetrievalQA.from_chain_type(llm=model_id, chain_type="stuff", retriever=retriever, return_source_documents=True)
+qa = RetrievalQA.from_chain_type(llm=llm_model, chain_type="stuff", retriever=retriever, return_source_documents=True)
 
 def generate(
     message: str,