JetPack Publicize Error Message

Something which should never happen, happened. Sorry about that. If you try again, maybe it will work.

Error code: -32300

Help. I can’t figure it out from the previous similar posts…

my site https://www.vaxcorpindo.com

tried going to the https://www.vaxcorpindo.com/xmlrpc.php does not exist.

I’m currently using Athena theme on wordpress.

Thanks.