Ensuring that the Maximum number of error log files is set to a value greater than or equal to 12

SQL Server error log files must be protected from loss. The log files must be backed up before they are overwritten. Retaining more error logs helps prevent loss from frequent recycling before backups can occur.

See https://docs.microsoft.com/en-us/sql/database-engine/configure-windows/scm-services-configure-sql-server-error-logs?view=sql-server-2017