Update app.py

app.py

@@ -1,7 +1,7 @@
 from fastapi import FastAPI, HTTPException
 from pydantic import BaseModel
 import os
-import dotenv
+from dotenv import load_dotenv
 from llama_index.core.indices.vector_store.base import VectorStoreIndex
 from llama_index.vector_stores.qdrant import QdrantVectorStore
 from llama_index.embeddings.fastembed import FastEmbedEmbedding