Path resolve error

[RedTeapot]

It would report "File not found with singular glob: F:\proj\build\tmp\html\js\plugin\swiper\swiper.min.css" while processing "index.html" in the flollowing tree:

html 　|- main 　　|- customer 　　　|- E238 　　　　|- index.html js 　|- plugin 　　|- swiper 　　　|- swiper.min.css

Build block: <!-- build:css ../../../../css/main/customer/E238/index.html.allinone.css --> <link rel = "stylesheet" href="../../../../js/plugin/swiper/swiper.min.css"/> <!-- endbuild -->