Update app.py

app.py

@@ -12,6 +12,7 @@ from flask import Flask, request, jsonify
 from flask_cors import CORS
 from dotenv import load_dotenv
 from unstructured.partition.pdf import partition_pdf
+from flask import send_from_directory, abort
 
 # Bloatectomy class (as per the source you provided)
 from bloatectomy import bloatectomy