update release failed

Hello community,

I have a test subscription on my server but at the time of launching the "yum update" command I have an error that I attached in the image.help please

error

[root@lxmdebppam01v proxymng]# yum update
Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager
https://cdn.redhat.com/content/dist/rhel/server/7/7Server/x86_64/os/repodata/repomd.xml: [Errno 14] curl#60 - "Peer's certificate issuer has been marked as not trusted by the use r."
Trying other mirror.
It was impossible to connect to the Red Hat servers.
This could mean a connectivity issue in your environment, such as the requirement to conf igure a proxy,
or a transparent proxy that tampers with TLS security, or an incorrect system clock.
Please collect information about the specific failure that occurs in your environment,
using the instructions in: https://access.redhat.com/solutions/1527033 and open a ticket with Red Hat Support.

No packages marked for update