Incorrect image path for the package printed by webpack or the service enabled by webpack-dev-server

just look at the picture.
clipboard.png

clipboard.png

personally, I think it"s the slash problem of URL. I found that the slash of the path in CSS is\, but I don"t know where to configure to change this problem. The two pictures above are screenshots of the service from webpack-dev-server.
The typed package has also been verified, and it is the same problem. Ask for advice from the great god ~

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e3eeb1-44809.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e3eeb1-44809.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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