Minify question

Google page speed tels me to minify this css file :

/wp-content/cache/minify/000000/69012/default.include.f85c06.css

I tried to upload it again after it was optimised by google page speed, and still get the error in Google Page speed to compact or minify this css.

Please Help. I am sure many people have this question.

🙂

https://ww.wp.xz.cn/plugins/w3-total-cache/