"export 'default' (imported as 'ElementUI') was not found in 'element-ui'

这个错误表示您在使用Element UI库时遇到了问题。通常，这个错误是由于导入Element UI的方式不正确引起的。

要解决这个问题，您可以尝试以下几个步骤：

1. 确保已正确安装Element UI库。请使用以下命令安装Element UI：

   npm install element-ui

2. 在您的代码中，确保正确导入Element UI的组件或样式。例如，如果您要导入一个按钮组件，可以使用以下方式：

   import { Button } from 'element-ui';

3. 如果您要导入整个Element UI库，可以使用以下方式：

   import ElementUI from 'element-ui';

4. 确保您的代码中没有其他错误或拼写错误。请仔细检查导入语句和使用Element UI组件的地方，确保没有任何拼写错误或其他语法问题。

如果您尝试了上述步骤后仍然遇到问题，请确保您的Element UI版本与您的代码兼容，并查阅Element UI的文档或社区以获取更多帮助和支持。

相关问题

export 'regionDataPlus' (imported as 'regionDataPlus') was not found in 'element-china-area-data'

这个错误通常是由于导入的模块或文件中缺少 "regionDataPlus" 导出所引起的。请检查你的代码，确保正确导入了 "element-china-area-data" 模块，并且正确引用了 "regionDataPlus" 导出。

可能的解决方案包括：

1. 确保你已经安装了 "element-china-area-data" 模块，并正确导入它。
2. 确认你正确引用了 "regionDataPlus" 导出。你可以在导入该模块时使用别名来避免拼写错误或命名冲突。
3. 检查一下你的代码中是否存在语法错误或其他问题，这些问题可能会干扰模块的正确导入和使用。你可以尝试调试和排除这些问题。

WARN "css.modules" option in vue.config.js is deprecated now, please use "css.requireModuleExtension" instead. INFO Starting development server... 98% after emitting CopyPlugin WARNING Compiled with 17 warnings 09:43:57 warning in ./node_modules/vue-router/dist/vue-router.mjs "export 'computed' was not found in 'vue' warning in ./src/router/index.js "export 'default' (imported as 'VueRouter') was not found in 'vue-router' warning in ./node_modules/vue-router/dist/vue-router.mjs "export 'defineComponent' was not found in 'vue' warning in ./node_modules/vue-router/dist/vue-router.mjs "export 'getCurrentInstance' was not found in 'vue' warning in ./node_modules/vue-router/dist/vue-router.mjs "export 'h' was not found in 'vue' warning in ./node_modules/vue-router/dist/vue-router.mjs "export 'inject' was not found in 'vue' warning in ./node_modules/vue-router/dist/vue-router.mjs "export 'nextTick' was not found in 'vue' warning in ./node_modules/vue-router/dist/vue-router.mjs "export 'onActivated' was not found in 'vue' warning in ./node_modules/vue-router/dist/vue-router.mjs "export 'onDeactivated' was not found in 'vue' warning in ./node_modules/vue-router/dist/vue-router.mjs "export 'onUnmounted' was not found in 'vue' warning in ./node_modules/vue-router/dist/vue-router.mjs "export 'provide' was not found in 'vue' warning in ./node_modules/vue-router/dist/vue-router.mjs "export 'reactive' was not found in 'vue' warning in ./node_modules/vue-router/dist/vue-router.mjs "export 'ref' was not found in 'vue' warning in ./node_modules/vue-router/dist/vue-router.mjs "export 'shallowRef' was not found in 'vue' warning in ./node_modules/vue-router/dist/vue-router.mjs "export 'unref' was not found in 'vue' warning in ./node_modules/vue-router/dist/vue-router.mjs "export 'watch' was not found in 'vue' warning in ./node_modules/vue-router/dist/vue-router.mjs "export 'watchEffect' was not found in 'vue'这个报错因为什么

这个报错是因为在使用Vue Router时，导入的Vue Router版本与当前项目中的Vue版本不匹配导致的。具体来说，Vue Router中使用了Vue 3的语法而当前项目中使用的是Vue 2，所以会出现一些语法上的错误。解决方法是将Vue Router更新到与当前项目中使用的Vue版本相匹配的版本。