"Can't find Unicode property definition "Blk=CJK""

That means you're on a Perl version before 5.16, since that's when that was added with Unicode 6.1 (see also perl5160delta). Note that Perl 5.14.0 was released over 9 years ago and 5.14.4 over 7 years ago. Perl 5.14 was at Unicode 6.0, while the latest Perl, 5.30, supports Unicode 12.0, and the upcoming (hopefully within a month or two) Perl 5.32 will support Unicode 13.0. Especially since you're working with Unicode, I strongly recommend you upgrade your Perl version.