DNS 'enslaved' server not taking orders

Finally timed out. I’ll look up the error after my shower. Who needs sleep anyhow?
Adding ns1.cisnetadmin.com
HTTP/1.0 500 Perl execution failed Server: MiniServ/2.013 Date: Mon, 27 Feb 2023 05:07:29 GMT Content-type: text/html; Charset=utf-8 Connection: close
ERROR — PERL EXECUTION FAILED
Can’t use string (“Failed to connect to fastrpc.cgi”…) as a HASH ref while “strict refs” in use at /usr/share/webmin/bind8/slave_add.cgi line 101.