bug fix

app.py

@@ -4,6 +4,13 @@ from dataloader import DataLoader
 import logging
 app = Flask(__name__)
 
+
+base_dir = Path(__file__).resolve().parent
+haystack_dir = base_dir / '.haystack'
+
+# Create the directory
+haystack_dir.mkdir(parents=True, exist_ok=True)
+
 UPLOAD_FOLDER = './data/'
 app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER