Update app.py

app.py

@@ -28,7 +28,7 @@ qa_chain = None
 vector_db = None
 api_token =os.getenv("HF_TOKEN")
 pdf_chunks = {}
-app.config['UPLOAD_FOLDER'] = 'temp_uploads'
+app.config['UPLOAD_FOLDER'] = '/tmp/temp_uploads'
 
 # Create upload folder if it doesn't exist
 Path(app.config['UPLOAD_FOLDER']).mkdir(parents=True, exist_ok=True)