Update app.py

app.py

@@ -26,9 +26,10 @@ def mod(pdf_url):
 accurately as possible based on the instructions and context provided."""
     query_wrapper_prompt = SimpleInputPrompt("<|USER|>{query_str}<|ASSISTANT|>")
     from huggingface_hub import login
-    #
-    !huggingface-cli login
-    #
+    hf_token = os.environ.get('HF_TOKEN')
+    if not hf_token:
+        raise ValueError("HF_TOKEN environment variable not found. Please set it in your Space settings.")
+    login(token=hf_token)
     llm = HuggingFaceLLM(
         context_window=4096,
         max_new_tokens=750,