Update app.py

app.py

@@ -20,7 +20,7 @@ DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 # ----- THIS IS WERE YOU CAN BUILD WHAT YOU WANT ------
 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"),
 )
 
 chat = ChatHuggingFace(llm=llm, verbose=True)