Update app.py

app.py

@@ -11,6 +11,8 @@ from langchain_huggingface import HuggingFaceEndpoint, ChatHuggingFace, HuggingF
 from langchain_core.messages import HumanMessage
 
 
+HF_API=os.getenv('HUGGINGFACEHUB_API_TOKEN'))
+
 
 # (Keep Constants as is)
 # --- Constants ---
@@ -32,7 +34,6 @@ class MyAgent:
         self.llm = ChatHuggingFace(
             llm=HuggingFaceEndpoint(
                 repo_id="mistralai/Mistral-7B-Instruct-v0.2",
-                huggingfacehub_api_token='HF_API',
                 task="text-generation",
                 provider="hf-inference",
             )