WP upgrade to 5.6 and wp_version_check issue

Hi,

I’m using WP as a multisite. I’ve upgraded the WP to 5.6 including all the plugins, themes etc.

So far, the web sites works without any issues.

However, using the JetPack to check the health status, I’m getting an issue about wp_version_check (something is preventing the wp_version_check, I don’t have the message in English).

Using grep, I’ve searched my WP directory tree and the only places that wp_version_check found is in the wordpress itself and the JetPack plugin only, so I don’t think any plugin “messes” with wp_version_check.

Any suggestion how to fix this? is it a known issue? should I talk to the JetPack guys?

Thanks