Ghost 4.1.2 - Slack return 404 urls

Developer help
1

I recently installed ghost 4, when I publish a post on the slack webhook I get the url https://mydomain.com/404 instead of the url of the post in question.

I receive your title correctly, imagine, … except the correct url

Node version - v14.15
Ghost-CLI version -1.16.3
Ghost version - 4.1.2 .4