.511 Module build failed (from ./node_modules/@dcloudio/vue-cli-plugin-uni/packages/sass-loader/dist/cjs.js): 09:54:30.512 SassError: Undefined variable: "$u-form-item-border-color". 09:54:30.513 on line 424 of D:\ideaWorkSpace\ehl-wx\node_modules\uview-ui\components\u-input\u-input.vue 09:54:30.514 >> border: 1px solid $u-form-item-border-color; 09:54:30.514 --------------------^ 09:54:30.514 Module build failed (from ./node_modules/@dcloudio/vue-cli-plugin-uni/packages/sass-loader/dist/cjs.js): 09:54:30.515 SassError: Undefined variable: "$u-form-item-height". 09:54:30.515 on line 210 of D:\ideaWorkSpace\ehl-wx\applicationCenter\knowledgeBase\addQuestion.vue 09:54:30.516 >> line-height: $u-form-item-height; 09:54:30.516 ------------------^解决

这个错误是因为在编译uview-ui组件时，找不到对应的Sass变量。要解决这个问题，你可以尝试以下步骤：

1. 确保你已经正确引入了uview-ui组件，并且按照官方文档的要求进行了配置。
2. 检查你的项目中是否已经安装了Sass相关的依赖。可以通过运行`npm install sass-loader node-sass`来安装这些依赖。
3. 确保在你的项目中正确配置了Sass的loader。可以在项目的webpack配置文件或vue.config.js文件中添加相应的配置，确保Sass能够正确加载和解析。
4. 如果以上步骤都没有解决问题，检查一下uview-ui版本和你当前项目的版本是否兼容。有时候不同版本之间的变量命名可能会有所不同，需要进行相应的调整。

如果你仍然无法解决这个问题，建议查看uview-ui的官方文档或在相关社区寻求帮助，以获取更详细的解决方案。

相关问题

Module build failed (from ./node_modules/@dcloudio/vue-cli-plugin-uni/packages/sass-loader/dist/cjs.js)

As an AI language model, I don't have access to your system and codebase. However, this error message indicates that there was an issue with building a module from the sass-loader package. Here are some common solutions that you can try:

1. Make sure that you have the latest version of sass-loader installed. You can do this by running the command `npm install sass-loader --save-dev`.

2. Check if there are any conflicting versions of sass-loader or other dependencies. You can try removing the node_modules folder and reinstalling all dependencies using the command `npm install`.

3. Check if your project's configuration is correct. Make sure that your webpack configuration file is set up correctly for using sass-loader.

4. If you are using Vue CLI, try running the command `vue add sass` to add the sass-loader plugin to your project.

If none of these solutions work, you may need to provide more information about your project and error message for further help.

uni-app 出现Module build failed (from ./node_modules/@dcloudio/vue-cli-plugin-uni/packages/sass-loader/dist/cjs.js)错误

这个错误通常是由于 sass-loader 版本不兼容导致的。您可以尝试以下方法解决此问题：

1.升级 sass-loader 版本

在 package.json 文件中查找 sass-loader 版本，将其升级到最新版本：

"devDependencies": {
  "sass-loader": "^10.0.5",
  // ...
}

然后执行 `npm install` 更新依赖。

2.降级 sass-loader 版本

如果升级 sass-loader 后仍然出现错误，可以尝试降级 sass-loader 版本：

"devDependencies": {
  "sass-loader": "^8.0.2",
  // ...
}

然后执行 `npm install` 更新依赖。

3.安装 node-sass

如果升级或降级 sass-loader 后仍然出现错误，可以尝试安装 node-sass：

npm install node-sass

然后再次运行项目。