Error when saving changes in DNS Zone Editor

[imhmichaels]

One of our customers is getting errors when trying to save changes in the DNS zone editor.  It tries for about 10 seconds, then shows a vague "Something went wrong" message in the top right corner of the screen, although the changes do get written to the zone file in /var/named.

The CWP error log repeats the following a few times:
2024/07/12 13:05:44 [notice] 627729#0: *8207 "^/v1/([^/]+)/?$" matches "/v1/sendComv2", client: 127.0.0.1, server: localhost, request: "POST /v1/sendComv2 HTTP/1.1", host: "127.0.0.1:2302"
2024/07/12 13:05:44 [notice] 627729#0: *8207 rewritten data: "/v1/index.php", args: "method=", client: 127.0.0.1, server: localhost, request: "POST /v1/sendComv2 HTTP/1.1", host: "127.0.0.1:2302"
2024/07/12 13:05:44 [info] 627729#0: *8207 client 127.0.0.1 closed keepalive connection
2024/07/12 13:05:44 [notice] 627729#0: *8209 "^/v1/([^/]+)/?$" matches "/v1/sendComv2", client: 127.0.0.1, server: localhost, request: "POST /v1/sendComv2 HTTP/1.1", host: "127.0.0.1:2302"
2024/07/12 13:05:44 [notice] 627729#0: *8209 rewritten data: "/v1/index.php", args: "method=", client: 127.0.0.1, server: localhost, request: "POST /v1/sendComv2 HTTP/1.1", host: "127.0.0.1:2302"
2024/07/12 13:05:44 [info] 627729#0: *8209 client 127.0.0.1 closed keepalive connection

Then once the error is shown on screen, the log shows this:
2024/07/12 13:05:46 [error] 627729#0: *8109 FastCGI sent in stderr: "PHP message: PHP Warning:  addslashes() expects exactly 1 parameter, 2 given in /usr/local/cwpsrv/var/services/user_files/modules/dns_zone_editor.php on line 0
PHP message: PHP Notice:  Undefined variable: [obfuscated] in /usr/local/cwpsrv/var/services/user_files/modules/dns_zone_editor.php on line 0" while reading response header from upstream, client: x.x.x.x, server: localhost, request: "POST /cwp_x/x/x/index.php?module=dns_zone_editor&acc=editdnsrecord HTTP/1.1", upstream: "fastcgi://unix:/usr/local/cwp/php71/var/sockets/x.sock:", host: "vps####.x.com:2083", referrer: "https://vps####.x.com:2083/cwp_x/x/?module=dns_zone_editor"

Since the PHP script named in the error is encoded, I can't even see where the error is actually occurring. Does anyone have any idea how to fix this?

[Starburst]

If you look, something is trying to access port 2302 on the localhost IP.

Which is a port DNS or CWP doesn't use, and really neither does anything else.

Are they trying to use CWP as the PRI or SEC DNS?