Module not found: Can't resolve 'bootstrap/dist/css/bootstrap-theme.css' in 'C:\react-form-validation-demo\src'

 

此错误是由配置错误、版本不匹配或引导安装损坏引起的。如果已经安装了引导程序和反应引导程序，则可以通过以下方式进行更改：

npm install --save bootstrap@^4.0.0-alpha.6 react-bootstrap@^0.32.1

（检查package.json是否包含“bootstrap”和“react bootstrap”（如果不确定），只需安装不同版本的bootstrap并重新构建项目。它应该替换或添加该文件（bootstrap/dist/css/bootstrap theme.css）到该文件夹中。根据我的create react app generated readme.md中的建议，引导程序的较低版本对我有效：

npm install --save react-bootstrap bootstrap@3

Adding Bootstrap

You don’t have to use React Bootstrap together with React but it is a popular library for integrating Bootstrap with React apps. If you need it, you can integrate it with Create React App by following these steps:

Install React Bootstrap and Bootstrap from npm. React Bootstrap does not include Bootstrap CSS so this needs to be installed as well:

sh npm install --save react-bootstrap bootstrap@3

Alternatively you may use yarn:

sh yarn add react-bootstrap bootstrap@3