import io

app.py

@@ -9,6 +9,7 @@ import requests
 from PyPDF2 import PdfReader
 from threading import Thread
 from flask import Flask, request, jsonify
+import io
 
 # Check if we're running in a Hugging Face Space and if SPACES_ZERO_GPU is enabled
 # IS_SPACES_ZERO = os.environ.get("SPACES_ZERO_GPU", "0") == "1"