Update app.py

app.py

@@ -4,10 +4,12 @@ from langchain_huggingface import HuggingFaceEndpoint
 from langchain.schema import HumanMessage, SystemMessage
 import os
 
-# Set up the LangChain model (using the same Zephyr model)
+# Set up the LangChain model (using HuggingFace Zephyr model)
 llm = HuggingFaceEndpoint(
     repo_id="HuggingFaceH4/zephyr-7b-beta",
-    model_kwargs={"temperature": 0.7, "max_length": 512}
+    temperature=0.7,
+    max_length=512,
+    huggingfacehub_api_token=os.getenv("HUGGINGFACEHUB_API_TOKEN")
 )
 
 # Create different prompt templates for different subjects