Update app.py

app.py

@@ -163,7 +163,7 @@ def create_conversational_rag_chain(retriever):
     llm = llamacpp.LlamaCpp(
         model_path = "qwen2-0_5b-instruct-q8_0.gguf",
         n_gpu_layers=0,
-        temperature=0.0,,
+        temperature=0.0,
         n_ctx=22000,
         n_batch=2000,
         max_tokens=200,