JetBackup 5 license check failed on CentOS 7: Jetbackup Failed checking license (https://check.jetlicense.com/v2/). Error: cURL error 77

Symptoms

JetBackup 5 fails license checks and the following message can be found in the log.

There was a failed license check. Error: Failed checking license (https://check.jetlicense.com/v2/). Error: cURL error 77: (see https://curl.haxx.se/libcurl/c/libcurl-errors.html). Please visit the following link for more information https://docs.jetbackup.com/licensing_issue_notification.html 

Description

This issue is caused by a simultaneous update of the nss and ca-certificates packages, invalidating the cached ca-cert used by the JetBackup service.

Workaround

1. Access the server's command line as the 'root' user via SSH or "Terminal" in WHM.
2. Restart the jetbackup5d and jetmongod services.

   systemctl restart jetbackup5d jetmongod