I try all the way to solve Error code 525 but did not work

[roreiketsu]

What is the name of the domain?

wallos.debill.cc

What is the error number?

525

What is the error message?

SSL handshake failed

What is the issue you’re encountering

I encouter error 525 after I use zero trust which I used to protect my selfhost app, so I remove zero trust

What steps have you taken to resolve the issue?

1.I used the Cloudflare only for DNS which mean I closed the proxy option, and I use another ssl certificate to replace origin certicate(got from Cloudflare) on my server，In this way I can access my site.
2.But when I select the “proxy” option for my domain, no matter I used"Full" or “Full(strict)” encryption mode, I always got Error 525 when I try to access my site, even if I used the newer origin certificate
3.I use nginx to solve the request and I confirm that my nginx.conf file is well and it support SNI

What feature, service or problem is this related to?

Secondary DNS

Screenshot of the error

[emanova]

A 525 error is typically caused by a configuration issue in the origin web server when its SSL certificate is not properly set up. Review the suggestions in this Community Tip for advice & insight. Also, Advanced Certificate Manager would allow you to secure multiple levels of your subdomains.