Display error message after Processing stage (instead of TY message) if the server where you send a WebHook responds with this JSON format:
{
error: boolen,
error_message: string,
error_message_timeout: (optional) int,
error_fields: (optional) object
}
example:
{
error: true,
error_message: 'Invalid email',
error_message_timeout: 10,
error_fields: {
email: 'Invalid email'
}
}