# 引入vant weapp出现报错 * [ ] 引入方法 * 选中miniprogram文件，右键选择在终端打开，输入 `npm i vant-weapp -S --production `进行安装 安装完成后，在微信开发者工具窗口，选择“工具”->“构建npm"，构建成功后，在miniprogram下会出现`miniprogram_npm`文件夹，对应的下面的就是vant组件库  * 选择微信开发工具的详情  * 勾选”使用npm模块“选项，才算完成  * [ ] 可能错误 1. jsEnginScriptError Component is not found in path “pages/help/vant-weapp/dist/button” (using by “pages/help/help”) Error: Component is not found in path “pages/help/vant-weapp/dist/button” (using by “pages/help/help”)  2. thirdScriptError sdk uncaught third Error module “miniprogram_npm/vant-weapp/picker/shared” is not defined Error: module “miniprogram_npm/vant-weapp/picker/shared” is not defined at require … 可能是安装错误，可以手动删除miniprogram_npm后重新安装或者直接重新输入`npm i vant-weapp -S --production`安装，再次尝试，可能还会有第二个错误，进入项目文件夹下，将miniprogram下的node_modules里的vant-weapp下的dist复制到miniprogram_npm的vant-weapp下，问题解决。