我在多人游戏中使用Colyseus。该框架生成了一个打字稿服务器，我试图将其部署到 Heroku。我在日志中收到以下错误：
2019-08-18T09:45:55.362304+00:00 app[web.1]: npm ERR! syscall spawn
2019-08-18T09:45:55.363375+00:00 app[web.1]: npm ERR! my-app@1.0.0 start: `ts-node index.ts`
2019-08-18T09:45:55.363477+00:00 app[web.1]: npm ERR! spawn ENOENT
2019-08-18T09:45:55.363677+00:00 app[web.1]: npm ERR!
2019-08-18T09:45:55.363800+00:00 app[web.1]: npm ERR! Failed at the my-app@1.0.0 start script.
2019-08-18T09:45:55.363912+00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
2019-08-18T09:45:55.373038+00:00 app[web.1]:
2019-08-18T09:45:55.373380+00:00 app[web.1]: npm ERR! A complete log of this run can be found in:
2019-08-18T09:45:55.373520+00:00 app[web.1]: npm ERR! /app/.npm/_logs/2019-08-18T09_45_55_365Z-debug.log
我的package.json …