Update app.py

app.py

@@ -4,6 +4,7 @@ from langchain_text_splitters import RecursiveCharacterTextSplitter
 from langchain_huggingface import HuggingFaceEmbeddings
 from langchain_chroma import Chroma
 from langchain_core.documents import Document
+from youtube_transcript_api import YouTubeTranscriptApi
 import tiktoken
 import os
 from dotenv import load_dotenv
@@ -15,7 +16,7 @@ from typing import List
 # Load environment variables
 load_dotenv()
 groq_api_key = os.getenv("GROQ_API_KEY")
-
+os.environ["USER_AGENT"] = "RAG-chat-app"
 
 client = Groq(api_key=groq_api_key)