Update app.py

app.py

@@ -273,4 +273,4 @@ def download(filename):
     return send_from_directory(app.config['DOWNLOAD_FOLDER'], filename)
 
 if __name__ == '__main__':
-    app.run(host="0.0.0.0", port=7860)
+    app.run(host="0.0.0.0", port=7860, threaded=True)