Update app.py

app.py

@@ -62,7 +62,7 @@ def initialize_llmchain(llm_model, temperature, max_tokens, top_k, vector_db, pr
     progress(0.1, desc="Initializing HF tokenizer...")
     
     # Retrieve the Hugging Face token from environment variables
-    hf_token = os.environ.get("HF_TOKEN")
+    hf_token = os.environ.get("HUGGINGFACEHUB_API_TOKEN")
     if not hf_token:
         raise ValueError("Hugging Face token not found. Please set the HF_TOKEN environment variable.")