遭遇报错：
Can't locate Math/Round.pm in @INC
经过亲自测试，下面的命令解决了我的问题。
yum install perl-Math-Round
参考资料
============
https://centos.pkgs.org/7/epel-x86_64/perl-Math-Round-0.06-16.el7.noarch.rpm.html
https://alvinalexander.com/blog/post/perl/perl-error-cant-locate-module-in-inc