mongo-express не подключается к mongodb

Question

Я установил mongodb и могу подключиться через оболочку, теперь я пытаюсь установить mongo-express, установка прошла успешно, я скопировал файл config.default.js в config.js, но он не может подключиться к mongo. Как видно из ошибки, он не может получить имя хоста

 (node:3085) DeprecationWarning: current Server Discovery and Monitoring engine is deprecated, and will be removed in a future version. To use the new Server Discover and Monitoring engine, pass option { useUnifiedTopology: true } to the MongoClient constructor.
(Use `node --trace-deprecation ...` to show where the warning was created)
Could not connect to database at index "0"
(node:3085) UnhandledPromiseRejectionWarning: MongoNetworkError: failed to connect to server [undefined:27017] on first connect [Error: getaddrinfo ENOTFOUND undefined
    at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:67:26) {
  name: 'MongoNetworkError'
}]
    at Pool.<anonymous> (/Users/name/.config/yarn/global/node_modules/mongodb/lib/core/topologies/server.js:438:11)
    at Pool.emit (events.js:315:20)
    at /Users/name/.config/yarn/global/node_modules/mongodb/lib/core/connection/pool.js:562:14
    at /Users/name/.config/yarn/global/node_modules/mongodb/lib/core/connection/pool.js:995:11
    at /Users/name/.config/yarn/global/node_modules/mongodb/lib/core/connection/connect.js:32:7
    at callback (/Users/name/.config/yarn/global/node_modules/mongodb/lib/core/connection/connect.js:280:5)
    at Socket.<anonymous> (/Users/name/.config/yarn/global/node_modules/mongodb/lib/core/connection/connect.js:310:7)
    at Object.onceWrapper (events.js:422:26)
    at Socket.emit (events.js:315:20)
    at emitErrorNT (internal/streams/destroy.js:106:8)
    at emitErrorCloseNT (internal/streams/destroy.js:74:3)
    at processTicksAndRejections (internal/process/task_queues.js:80:21)
(node:3085) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:3085) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

Answer 1

У меня была такая же ошибка.
Принуждение URL-адреса подключения исправило это для меня:

      mongo-express --url "mongodb://localhost:27017" --admin

( --admin опция позволяет вывести список всех баз данных)