Update app.py

fix huggingface token

app.py

@@ -26,7 +26,7 @@ class BasicAgent:
         
         llm = HuggingFaceEndpoint(
         repo_id="Qwen/Qwen2.5-Coder-32B-Instruct",
-        huggingfacehub_api_token=HUGGINGFACEHUB_API_TOKEN,
+        huggingfacehub_api_token=os.environ.get("HUGGINGFACEHUB_API_TOKEN"),
         )
         
         search_tool = DuckDuckGoSearchRun()