Webpack4 packing error webpack-dev-server

Packaging error occurs after upgrading project files to modify webpack.config.js, with webpack4.*

ERROR in multi (webpack)-dev-server/client?http://localhost:8080 ./src
Module not found: Error: Can"t resolve "./src" in "F:\HappyMmall\mall"
 @ multi (webpack)-dev-server/client?http://localhost:8080 ./src

webpack-dev-server fallback to 2.7.1 try?


No webpack.config.js file was found


cnpm install

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-64f5-1bdb6cd-3128e.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bdb6cd-3128e.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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