Foreman::WrappedException: Unable to connect -- ProxyAPI::ProxyException: ERF12-5356

hi all ,

I can list the certificates with puppetserver ca:

# puppetserver ca list -a
Signed Certificates:       (SHA256)  16:16:FF:5C:73:1D:70:80:24:8D:68:53:F4:1A:6E:DF:29:7C:AB:2D:DE:12:CC:74:54:18:6E:B7:A3:4C:2D:91     alt names: ["", ""]       authorization extensions: [pp_cli_auth: true]

But I get below Error when I try to access the Puppet-CA via Foreman…

Failure: ERF50-5345 [Foreman::WrappedException]: Unable to connect ([ProxyAPI::ProxyException]: ERF12-5356 [ProxyAPI::ProxyException]: Unable to get PuppetCA certificates ([RestClient::NotAcceptable]: 406 Not Acceptable) for proxy

I seach here in forum, but the answeres doesnt suits me…

Foreman and Proxy versions: foreman 3.2.1 , foreman-proxy 3.2.1

Foreman and Proxy plugin versions:

Distribution and version: Ubuntu 20.04.4 LTS

thanks all