Heroku npm 构建错误日志位置

Mr *_*r T 6 heroku npm heroku-cli

我已将我的节点 Web 应用程序部署到 heroku。它已建成但未能启动。这是输出的前几行:

2018-03-05T20:17:51.058817+00:00 heroku[web.1]: - Starting process with command `npm start`
2018-03-05T20:17:52.868249+00:00 app[web.1]: - npm ERR! missing script: start
2018-03-05T20:17:52.874771+00:00 app[web.1]: - 
2018-03-05T20:17:52.874973+00:00 app[web.1]: - npm ERR! A complete log of this run can be found in:
2018-03-05T20:17:52.875068+00:00 app[web.1]: - npm ERR!     /app/.npm/_logs/2018-03-05T20_17_52_869Z-debug.log
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错误日志还在继续,但我正在尝试定位日志位置:

/app/.npm/_logs/2018-03-05T20_17_52_869Z-debug.log

我如何才能做到这一点?