[ISSUE#12446] getMacInstance 补充日志

[fuhouyu]

Please do not create a Pull Request without creating an issue first.

What is the purpose of the change

fixes #12446
对Mac getMacInstance(Key key)补充日志

Brief changelog

XX

Verifying this change

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头一次尝试着学习提交PR～如有规范和其它问题，希望大佬们提点，谢谢。

[CLAassistant]

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[HMYDK]

@fuhouyu pr中要关联issue，可以参考其它pr的书写方式。

[fuhouyu]

@fuhouyu pr中要关联issue，可以参考其它pr的书写方式。

好的老师，已经修改，多谢指正。