Based on the information provided, it seems that you have encountered an issue with the webhook URL configuration for the PAYUMONEY payment gateway. The payment gateway requires the webhook URL to meet specific criteria:
1. The webhook URL should be a dynamic URL with a status 200, indicating a successful response.
2. The webhook URL should accept POST data in JSON format, allowing the payment gateway to send relevant information about the transaction.
3. The webhook URL should be secured with HTTPS, ensuring a secure and encrypted connection.
To resolve this issue, you will need to ensure that your webhook URL meets these requirements. You may need to update your website's webhook configuration or contact your web developer for assistance. Additionally, referring to the attached screenshots provided by PAYUMONEY can help you understand the specific requirements and make the necessary changes to your webhook URL setup.