Invalid configuration object. Webpack has been initialised using a configuration object that does not match the API schema.

 - configuration.module has an unknown property 'loaders'. These properties are valid:

   object { defaultRules?, exprContextCritical?, exprContextRecursive?, exprContextRegExp?, exprContextRequest?, noParse?, rules?, strictExportPresence?, strictThisContextOnImports?, unknownContextCritical?, unknownContextRecursive?, unknownContextRegExp?, unknownContextRequest?, unsafeCache?, wrappedContextCritical?, wrappedContextRecursive?, wrappedContextRegExp? }

   -> Options affecting the normal modules (`NormalModuleFactory`).

总是提示这个，解决不掉，是什么错，能否帮忙看看