How to set a custom error page for reject request

[xx-zhang]

How to set a custom error page for reject request .

such as this png show, the defalt error_page:403 response is None, but i want to custom a errror_page to set some ResponseBody, how to generate it. my using example is example/http_server.

[jcchavezs]

This usually isn't attribution of the WAF, are you using any proxy in front of this?

[xx-zhang]

This usually isn't attribution of the WAF, are you using any proxy in front of this?

@jcchavezs no any middleware/proxy in fornt of http_server.