我是编程新手，最近下载了webpack和npm，但是当我在控制台中运行以下命令时：
npm run build
我收到以下错误：
PS C:\Users\andre\Desktop\wepack-inicial> npm run build wepack-inicial@1.0.0 build C:\Users\andre\Desktop\wepack-inicial webpack Insufficient number of arguments or no entry found. Alternatively, run 'webpack(-cli) --help' for usage info. Hash: 0899d81d7e62569a3432 Version: webpack 4.43.0 Time: 32ms Built at: 14/05/2020 8:57:24 p. m. WARNING in configuration The 'mode' option has not been set, webpack will fallback to 'production' for this value. Set 'mode' option to 'development' or 'production' to enable defaults for each environment. You can also set it to 'none' to disable any default behavior. Learn more: https://webpack.js.org/configuration/mode/ ERROR in Entry module not found: Error: Can't resolve './src' in 'C:\Users\andre\Desktop\wepack-inicial' npm ERR! code ELIFECYCLE npm ERR! errno 2 npm ERR! wepack-inicial@1.0.0 build: `webpack` npm ERR! Exit status 2 npm ERR! npm ERR! Failed at the wepack-inicial@1.0.0 build script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above. npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\andre\AppData\Roaming\npm-cache\_logs\2020-05-15T01_57_24_619Z-debug.log PS C:\Users\andre\Desktop\wepack-inicial> npm install -g express-generator
希望您能帮助我，谢谢。