Custom domain not working for worker when post request become get request

[ross_fan]

What is the name of the domain?

flux-one.com

What is the error number?

the post request has been changed to get request

What is the issue you’re encountering

the https post request become https get request , that 's weird

What feature, service or problem is this related to?

DNS records

Screenshot of the error

[ross_fan]

I configured the custom domain to my work, the dumain is like chater.dev.flux-one.com,
but when I setup https-post request by curl:
curl -X POST https://chater.dev.flux-one.com/chat
–header ‘Content-Type: application/json’
–header ‘Authorization: zzyyxx’
–data ‘{“content”: “write a quick sort in python”}’

the log in my worker is the get request for icon:

Is there something wrong for my DNS record? And how to configure the custom domain for a worker ?
("I don,t know what happended, and the topic can just upload one picture for one post, that’s too bad. ")