### Description master分支 example 执行npm run dev 无法启动 报错 : page-skeleton-webpack-plugin/examples/sale/node_modules/_webpack-cli@2.1.5@webpack-cli/bin/config-yargs.js:89 describe: optionsSchema.definitions.output.properties.path.description, TypeError: Cannot read property 'properties' of undefined ### Steps to reproduce 1. cd example 2. npm install 3. npm run dev