The problem of building vue by webpack

spent the afternoon looking at the webpack documentation, so I thought of creating a vue, but no matter what I did with vue, it didn"t work.
below is the address of git. The structure is very simple. Just output a hello, sentence. Please help me to see what went wrong

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https://github.com/justDema/Vue

Mar.19,2021

vue-cli scaffolding directly generate


you are missing a lot of files, missing the js file of main.js main entry, npm run dev or build


using vue-cli scaffolding to generate vue projects. He integrates webpack, documents to make it clear

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-64f5-1e47b86-43209.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e47b86-43209.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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