今天运行一个以前vue项目，启动时报错如下：

 ERROR  Failed to compile with 1 error上午10:19:33

 error  in ./src/App.vue?vue&type=style&index=0&lang=scss&

Syntax Error: Error: Missing binding D:\javacode\Springboot-MiMall-RSA\VueFront\node_modules\_node-sass@4.14.1@nod         e-sass\vendor\win32-x64-83\binding.node
Node Sass could not find a binding for your current environment: Windows 64-bit with Node.js 14.x

Found bindings for the following environments:
  - Windows 64-bit with Node.js 12.x

This usually happens because your environment has changed since running `npm install`.
Run `npm rebuild node-sass` to download the binding for your current environment.

大致意思是：因为我把node 12升级成了14， Node Sass库的兼容性出问题了。

我当时没多想，就把node_modules目录删除了，重新运行npm install，结果报错：

No module named gyp

 网上查了一些资料说解决办法如下：

１.　指定python2.7路径：npm config set python python2.7

2.    运行：npm install –no-optional

以上参考：https://spin.atomicobject.com/2019/03/27/node-gyp-windows/

 但是两个方法都试过了，全部无效。

后来在一篇文章：node-sass，sass-loader，node-gyp，node报错，版本对应问题

 找到解决办法： 原来node版本跟node-sass有对应关系：

我之前的node-sass版本是4.12.0，把它修改成4.14.1 ，然后重新npm install就解决问题了

 

 此时我突然想起我启动时第一次的报错：

RSA\VueFront\node_modules\_node-sass@4.14.1@nod         e-sass\vendor\win32-x64-83\binding.node
Node Sass could not find a binding for your current environment: Windows 64-bit with Node.js 14.x

Found bindings for the following environments:
  - Windows 64-bit with Node.js 12.x

This usually happens because your environment has changed since running `npm install`.
Run `npm rebuild node-sass` to download the binding for your current environment.

 上面的提示其实写清楚了需要node-sass@4.14.1来匹配Node.js 14.x，建议修复命令：npm rebuild node-sass来修复。

我在想如果一开始我就运行：npm rebuild node-sass 这跟命令，也许问题就解决了