bitbucket webhooks never fired

[saili.chen]

Hi, I have created a webhook following this guide.

https://confluence.atlassian.com/bitbucketserver076/managing-webhooks-in-bitbucket-server-1026535073.html?utm_campaign=in-app-help&utm_medium=in-app-help&locale=zh_CN%2Czh&utm_source=stash

push events will trigger this webook.

I've done many pushes , but this webhook is never fired.