SyntaxError: Unexpected token '.'
C:\Users\86156\Desktop\Vue3学习\vue3_cli_test1\node_modules\@vue\compiler-core\dist\compiler-core.cjs.js:3261
            if (grandparent?.source) {
                            ^

SyntaxError: Unexpected token '.'
    at Module._compile (internal/modules/cjs/loader.js:895:18)  
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:995:10)
    at Module.load (internal/modules/cjs/loader.js:815:32)      
    at Function.Module._load (internal/modules/cjs/loader.js:727:14)
    at Module.require (internal/modules/cjs/loader.js:852:19)   
    at require (internal/modules/cjs/helpers.js:74:18)
    at Object.<anonymous> (C:\Users\86156\Desktop\Vue3学习\vue3_cli_test1\node_modules\@vue\compiler-core\index.js:6:20)        
    at Module._compile (internal/modules/cjs/loader.js:959:30)  
    at Object.Module._extensions..js (internal/modules/cjs/loadenpm ERR! code ELIFECYCLE
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the vue3_cli_test1@0.1.0 serve script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\86156\AppData\Roaming\npm-cache\_logs\2022-05-20T07_18_15_942Z-debug.log

跟着尚硅谷的视频准备学习 Vue3，创建项目结果运行就报错了！好像是没办法识别 .?这个es6 的新的运算符。下面的方法都试了还是一直报这样的错。有没有人遇到这样的错误呀，救命！

• 更新 vue-cli 版本
• 有博客说是node版本太高了？更新 node 版本，用了12和10的都不行

现在的版本：

报错：