Update app.py

app.py

@@ -36,7 +36,7 @@ LOGGING_CONFIG = {
 def download_file_with_progress(url: str, filename: str):
     """Download a file with progress bar using requests"""
     response = requests.get(url, stream=True)
-    total_size = int(response.headers.get('content-length, 0))
+    total_size = int(response.headers.get('content-length', 0))
     
     with open(filename, 'wb') as file, tqdm(
         desc=filename,