Hello,

Please check your server error logs and let me know the error details so that I can suggest.

If you are not sure about server error logs. you can enable app logs by changing the `log_threshold` to 1 in the `app/config/config.php` file and then try to add again. Lastly check the latest file in the `app/logs/` folder.

You can check the cosnole too if there are any javascript errors.

Thank you