Update Qbot.py

Qbot.py

@@ -5,6 +5,7 @@ from langchain_community.vectorstores import Chroma
 from langchain_community.document_loaders import PyPDFLoader
 from langchain.chains import RetrievalQA
 import gradio as gr
+import os
 
 #ignoring Unnecessary warnings
 def warn(*arg, **kwargs):
@@ -17,7 +18,7 @@ warnings.filterwarnings("ignore")
 
 def get_llm(model_id, temperature, max_new_tokens):
 
-    huggingface_api_key = "" 
+    huggingface_api_key = os.getenv("HUGGINGFACEHUB_API_TOKEN") 
 
     #initialize the pipeline
     Qbot_llm = HuggingFaceHub(