etcnamedconf13 unknown option

This error message indicates that there is an unknown or invalid option in line 13 of the named.conf file. The invalid option appears to be a whitespace character, which may have been accidentally inserted into the configuration file.

To resolve this error, you should review the named.conf file and remove any non-printable characters or whitespace characters that may be causing the issue. You can also try commenting out the line 13 and restarting the named service to see if the error persists.