assets inject incorrent(produce three files for one file)

[wscfe]

thank you , i need help
three produced files:

webpack config

my preload-webpack-plugin version is 3.0.0-beta.4

i dont need extra files, i dont know how to do

[wscfe]

i am true that i have one app.[hash].css module file, but when i use this plugin, it change to three app.css file