The location where the administrator found the problem was in CRL (Certificate revocation list)
A certificate revocation list is a list of digital certificates that has been revoked by the issuing certificate authority (CA) before their actual expiration date.
The system administrator received an error because it was not a trusted server.
The CRL is type of block list that includes certificate that is no longer trusted and used by various endpoints to verify if a certificate is trusted and valid.
The CRL file is signed by the CA to prevent tampering.
Read more about systems here:
https://brainly.com/question/9619145