Update app.py

app.py

@@ -169,7 +169,7 @@ def create_conversational_rag_chain(retriever):
         n_ctx=5000,
         n_batch=2000,
         max_tokens=250,
-        repeat_penalty=1.8,
+        repeat_penalty=1.9,
         last_n_tokens_size = 250,
         callback_manager=callback_manager,
         verbose=False,