运行Weex调试时收到错误

[khanusama20]

01:06:21 : Launching Dev Tools...
01:06:21 : Starting inspector on port 9222
Error: Chromium revision is not downloaded. Run "npm install" or "yarn install"
at Launcher.launch (C:\Users\DELL.wx\modules\node_modules_puppeteer@1.20.0@puppeteer\lib\Launcher.js:119:15)
at async Object.exports.launchHeadless (C:\Users\DELL.wx\modules\node_modules_@weex-cli_debug@2.0.0-beta.31@@weex-cli\debug\src\server\headless.js:7:13)