Undefined subroutine is_valid_ipv4 when deleting addon domain

FYI ... When deleting an addon domain, I received the following error message: (XID djj3u8) Undefined subroutine &Cpanel::Validate::IP::is_valid_ipv4 called at /usr/local/cpanel/Cpanel/SPF.pm line 117. But I think the addon domain deleted okay, since I was able to set it up again under a new account. CPanel v92.0.9