umi-mock例子无法运行

[guwan]

运行yarn dev

报如下错误： yarn run v1.22.5 error Couldn't find a package.json file in "F:\IdeaProjects\examples" info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

F:\IdeaProjects\examples>cd umi-mock

F:\IdeaProjects\examples\umi-mock>yarn dev yarn run v1.22.5 $ concurrently 'remax build -t ali -w' 'umi dev' F:\IdeaProjects\examples\umi-mock\node_modules\rxjs\internal\util\hostReportError.js:4 setTimeout(function () { throw err; }, 0); ^

RangeError: Format string contains an unescaped latin alphabet character l at F:\IdeaProjects\examples\umi-mock\node_modules\date-fns\format\index.js:442:13 at Array.map () at format (F:\IdeaProjects\examples\umi-mock\node_modules\date-fns\format\index.js:415:45) at Logger.getPrefixesFor (F:\IdeaProjects\examples\umi-mock\node_modules\concurrently\src\logger.js:38:19) at Logger.getPrefix (F:\IdeaProjects\examples\umi-mock\node_modules\concurrently\src\logger.js:48:31) at Logger.logCommandText (F:\IdeaProjects\examples\umi-mock\node_modules\concurrently\src\logger.js:73:53) at SafeSubscriber._next (F:\IdeaProjects\examples\umi-mock\node_modules\concurrently\src\flow-control\log-output.js:9:58) at SafeSubscriber.__tryOrUnsub (F:\IdeaProjects\examples\umi-mock\node_modules\rxjs\internal\Subscriber.js:205:16) at SafeSubscriber.next (F:\IdeaProjects\examples\umi-mock\node_modules\rxjs\internal\Subscriber.js:143:22) at Subscriber._next (F:\IdeaProjects\examples\umi-mock\node_modules\rxjs\internal\Subscriber.js:89:26) error Command failed with exit code 1. info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

[watsonhaw5566]

你好，经过我们这边测试是可以的，麻烦检查一下是否是依赖包安装的问题。建议使用国内npm源