【发布时间】：2017-11-06 23:12:15
【问题描述】：
我刚刚在本地主机中尝试了 meanjs 0.4.0 并且运行良好，但是当我部署到 heroku link to app 并尝试“注册”选项时，我在导航器控制台中得到了这个：
POST https://meanjsapptest.herokuapp.com/api/auth/signup 503 (Service Unavailable)
当我在 CLI 中编写命令 heroku 日志时，我得到：
2017-06-06T04:15:35.152983+00:00 app[web.1]: (node:16) DeprecationWarning: Mongoose: mpromise (mongoose's default promise library) is deprecated, plug in your own promise library instead: http://mongoosejs.com/docs/promises.html
2017-06-06T04:15:35.153005+00:00 app[web.1]: crypto.js:635
2017-06-06T04:15:35.153006+00:00 app[web.1]: throw new TypeError(
2017-06-06T04:15:35.153006+00:00 app[web.1]: ^
2017-06-06T04:15:35.153007+00:00 app[web.1]:
2017-06-06T04:15:35.153008+00:00 app[web.1]: TypeError: The "digest" argument is required and must not be undefined
2017-06-06T04:15:35.153009+00:00 app[web.1]: at pbkdf2 (crypto.js:635:11)
2017-06-06T04:15:35.153010+00:00 app[web.1]: at Object.exports.pbkdf2Sync (crypto.js:628:10)
2017-06-06T04:15:35.153012+00:00 app[web.1]: at model. (/app/modules/users/server/models/user.server.model.js:112:26)
2017-06-06T04:15:35.153011+00:00 app[web.1]: at model.UserSchema.methods.hashPassword (/app/modules/users/server/models/user.server.model.js:123:19)
2017-06-06T04:15:35.153013+00:00 app[web.1]: at _next (/app/node_modules/hooks-fixed/hooks.js:62:30)
2017-06-06T04:15:35.153013+00:00 app[web.1]: at fnWrapper (/app/node_modules/hooks-fixed/hooks.js:186:8)
2017-06-06T04:15:35.153014+00:00 app[web.1]: at model. (/app/node_modules/mongoose/lib/plugins/saveSubdocs.js:20:7)
2017-06-06T04:15:35.153014+00:00 app[web.1]: at _next (/app/node_modules/hooks-fixed/hooks.js:62:30)
2017-06-06T04:15:35.153015+00:00 app[web.1]: at fnWrapper (/app/node_modules/hooks-fixed/hooks.js:186:8)
2017-06-06T04:15:35.153015+00:00 app[web.1]: at /app/node_modules/mongoose/lib/plugins/validateBeforeSave.js:33:13
2017-06-06T04:15:35.153016+00:00 app[web.1]: at /app/node_modules/kareem/index.js:131:16
2017-06-06T04:15:35.153016+00:00 app[web.1]: at _combinedTickCallback (internal/process/next_tick.js:95:7)
2017-06-06T04:15:35.153017+00:00 app[web.1]: at process._tickCallback (internal/process/next_tick.js:161:9)
2017-06-06T04:15:35.167579+00:00 app[web.1]: error: Forever detected script exited with code: 1
2017-06-06T04:15:35.173500+00:00 app[web.1]: error: Script restart attempt #1
2017-06-06T04:15:35.292903+00:00 app[web.1]:
2017-06-06T04:15:35.294191+00:00 app[web.1]:
2017-06-06T04:15:35.310954+00:00 app[web.1]: + Error: Certificate file or key file is missing, falling back to non-SSL mode
2017-06-06T04:15:35.311037+00:00 app[web.1]: To create them, simply run the following from your shell: sh ./scripts/generate-ssl-certs.sh
2017-06-06T04:15:35.311039+00:00 app[web.1]:
2017-06-06T04:15:35.916892+00:00 app[web.1]: Db.prototype.authenticate method will no longer be available in the next major release 3.x as MongoDB 3.6 will only allow auth against users in the admin db and will no longer allow multiple credentials on a socket. Please authenticate using MongoClient.connect with auth credentials.
我现在不知道该怎么做，因为 Heroku 支持告诉我错误在我的代码中，但我没有更改任何内容！
【问题讨论】：