ECC OCSP nginx.conf ssl_stapling ignored

Help
1

I've setup nginx with RSA and OCSP.

For another domain, in another server, I wanted to set it up using ECC and OCSP.

The certificate has been installed and it's working.
But the OCSP part is not.
When nginx -t, get:

nginx: [warn] "ssl_stapling" ignored, issuer certificate not found for certificate mydomain.com.cer

What I did was to get this certificate:
https://letsencrypt.org/certs/lets-encrypt-e1.pem

and use it in the ssl_trusted_certificate directive.

Apart from the ssl_certificate and ssl_certificate_key, the other directives are:

    ssl_protocols       TLSv1.2 TLSv1.3;
    ssl_prefer_server_ciphers on;
    ssl_ciphers "EECDH+ECDSA+AESGCM  EECDH+ECDSA+SHA384 EECDH+ECDSA+SHA256 HIGH !RC4 !aNULL !eNULL !LOW !3DES !MD5 !EXP !PSK !SRP !DSS";
    ssl_dhparam /usr/pkg/etc/nginx/certs/dhparam.pem;
    ssl_stapling on;
    ssl_stapling_verify on;
    ssl_trusted_certificate /usr/pkg/etc/nginx/certs/lets-encrypt-e1.pem;
    ssl_session_cache   shared:SSL:20m;
    ssl_session_timeout 20m;
    ssl_session_tickets on;

As this is very complex to me, please explain as if I'm five what to do to have OCSP with ECC or if it's not possible.

2

If you're using acme.sh, you want to be setting ssl_certificate to fullchain.cer, not mydomain.com.cer.

Just set this to acme.sh's chain.cer.

3

Thank you very much @_az , Without your help I wouldn't find the solution.
All the best to you.

For the record:
ssl_certificate /somedir/.acme.sh//mysite.com_ecc/fullchain.cer; ssl_trusted_certificate /somedir/.acme.sh/mysite.com_ecc/ca.cer;