Update app.py

app.py

@@ -5,8 +5,8 @@ import langchain_huggingface
 import huggingface_hub
 from langchain_community.document_loaders import YoutubeLoader
 from langchain_huggingface import HuggingFaceEndpoint,ChatHuggingFace
-os.environ['HUGGINGFACEHUB_API_TOKEN'] = os.getenv("Utube")
-os.environ['HF_TOKEN'] = os.getenv("Utube")
+os.environ['HUGGINGFACEHUB_API_TOKEN'] = os.getenv("hf_token")
+os.environ['HF_TOKEN'] = os.getenv("hf_token")
 meta_llm=HuggingFaceEndpoint(repo_id="meta-llama/Llama-3.1-8B-Instruct",
                              provider="nebius",
                              temperature=0.5,max_new_tokens=150,