mup setup says: Start Mongo: FAILED - docker: userland proxy: listen tcp 127.0.0.1:27017: bind: address already in use.

I am trying to deploy my app into Digital Ocean with mup, and it is the output all the time:

Started TaskList: Setup Docker
[207.154.220.227] - Setup Docker
[207.154.220.227] - Setup Docker: SUCCESS

Started TaskList: Setup Meteor
[207.154.220.227] - Setup Environment
[207.154.220.227] - Setup Environment: SUCCESS

Started TaskList: Setup Mongo
[207.154.220.227] - Setup Environment
[207.154.220.227] - Setup Environment: SUCCESS
[207.154.220.227] - Copying mongodb.conf
[207.154.220.227] - Copying mongodb.conf: SUCCESS

Started TaskList: Start Mongo
[207.154.220.227] - Start Mongo
[207.154.220.227] x Start Mongo: FAILED

              ------------------------------------STDERR------------------------------------
              Error response from daemon: Container a1617b2aaaa3fd4aeb8e1241ec90ae32b4a88b0df9c95e5d73de608b68788ef0 is not running
        docker: Error response from daemon: driver failed programming external connectivity on endpoint mongodb (2f5db292f7022a39dfe3ff5fdf5ed7de38ddc7bb6f787625cd0fb45a5fa10cd6): Error starti
ng userland proxy: listen tcp 127.0.0.1:27017: bind: address already in use.

              ------------------------------------STDOUT------------------------------------
              3.2.15: Pulling from library/mongo
        Digest: sha256:ef3277c7221e8512a1657ad90dfa2ad13ae2e35aacce6cd7defabbbdcf67ca76
        Status: Image is up to date for mongo:3.2.15
        mongodb
        mongodb
        Running mongo:3.2.15
        97a28fe9d2dca6130ffe6622e662a230ecea34214920673c574a4d3e57fafb3c

              ------------------------------------------------------------------------------

I have checked the server and I can connect through SSH. I am using one of the MongoDB-v3.4 One-click droplets.

This is how my mup.js looks like:

module.exports = {
  servers: {
    one: {
      host: 'xxx.xxx.xxx.xxx',
      username: 'root',
      pem: '~/.ssh/id_rsa'
      // or neither for authenticate from ssh-agent
    }
  },

  meteor: {
    name: 'myapp',
    path: '../myappr/',

    servers: {
      one: {},
    },

    buildOptions: {
      serverOnly: true,
    },

    env: {
      // If you are using ssl, it needs to start with https://
      ROOT_URL: 'http://app.com',
      "PORT": 80,
      MONGO_URL: 'mongodb://localhost/local',
      //MONGO_OPLOG_URL: 'mongodb://mongodb/local',
    },
    deployCheckWaitTime: 60,

    docker: {
      image: 'abernix/meteord:base',
    },

    // Show progress bar while uploading bundle to server
    // You might need to disable it on CI servers
    enableUploadProgressBar: true
  },

  mongo: {
    version: '3.2.15',
    servers: {
      one: {}
    }
  },

  // (Optional)
  // Use the proxy to setup ssl or to route requests to the correct
  // app when there are several apps

  // proxy: {
  //   domains: 'mywebsite.com,www.mywebsite.com',

  //   ssl: {
  //     // Enable Let's Encrypt
  //     letsEncryptEmail: 'email@domain.com'
  //   }
  // }
};

In my app I am using MongoDB 3.2.15, but I do not know if I should downgrade the version of MongoDB in the server or upgrade my local version. Or maybe the problem is not even there.

Can someone help me with this? I am going nuts with this problem.