Update app.py

app.py

@@ -12,7 +12,8 @@ from llama_index.llms.huggingface import (
 )
 Settings.llm = HuggingFaceLLM(model_name="facebook/blenderbot-400M-distill",
                               device_map="cpu",
-                              context_window=1024,
+                              context_window=128,
+                              max_token=2048,
                               tokenizer_name="facebook/blenderbot-400M-distill"
                              )
 Settings.embed_model = HuggingFaceEmbedding(model_name="BAAI/bge-small-en-v1.5")