Conflict: Multiple assets emit to the same filename ./build.js

PS F:\vue\vue20200414\param12> npm run dev

> [email protected] dev F:\vue\vue20200414\param12
> webpack --config ./webpack.dev.config.js

Webpack is watching the files…

Hash: 736561cfa3fb48591f9f
Version: webpack 3.12.0
Time: 234ms
     Asset    Size  Chunks             Chunk Names
./build.js  230 kB       0  [emitted]  main2
   [0] (webpack)/buildin/global.js 509 bytes {0} {1} [built]
   [2] ./src/common.js 39 bytes {0} {1} [built]
   [6] ./src/main1.js 99 bytes {1} [built]
   [7] ./src/main2.js 99 bytes {0} [built]
    + 4 hidden modules

ERROR in chunk main1 [entry]
./build.js
Conflict: Multiple assets emit to the same filename ./build.js

 

入口文件多。出口文件少