Course level 2 workflow 2

Hi, I'm taking the n8n level 2 course, but in workflow 2, the Dataset URL: https://internal.users.n8n.cloud/webhook/level2-erp that was sent to my email isn't working and I can't complete the task. Could you help me?

Correct, Getting below response:
{

"code": 503,

"message": "Database is not ready!"

}
Team - can you please review? Thanks!