title: Problem connection with local mongodb from nodejs: [Symbol(mongoErrorContextSymbol)]
body: <p>I'm creating nodejs server and connect it to local mongodb on EC2 instance. Connection with mongodb is error.</p>
  
  <p>I've tried it on local machine and it ran well. I've tried use MongoAtlas successfully. But when try on EC2 instance, it shows the error message:</p>
  
  <blockquote>
    <p>telegram-bot-02@0.0.0 start /home/ec2-user/workspace/rep01
    node ./bin/www</p>
    
    <p>mongdb://127.0.0.1:27017/telegram
    MongoDb connection error { MongoParseError: Invalid connection string
        at parseConnectionString (/home/ec2-user/workspace/rep01/node_modules/mongodb-core/lib/uri_parser.js:412:21)
        at connect (/home/ec2-user/workspace/rep01/node_modules/mongodb/lib/operations/mongo_client_ops.js:180:3)
        at connectOp (/home/ec2-user/workspace/rep01/node_modules/mongodb/lib/operations/mongo_client_ops.js:284:3)
        at executeOperation (/home/ec2-user/workspace/rep01/node_modules/mongodb/lib/utils.js:420:24)
        at MongoClient.connect (/home/ec2-user/workspace/rep01/node_modules/mongodb/lib/mongo_client.js:168:10)
        at Promise (/home/ec2-user/workspace/rep01/node_modules/mongoose/lib/connection.js:521:12)
        at new Promise ()
        at NativeConnection.Connection.openUri (/home/ec2-user/workspace/rep01/node_modules/mongoose/lib/connection.js:518:19)
        at Mongoose.connect (/home/ec2-user/workspace/rep01/node_modules/mongoose/lib/index.js:270:15)
        at Object. (/home/ec2-user/workspace/rep01/app.js:16:10)
        at Module._compile (internal/modules/cjs/loader.js:689:30)
        at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
        at Module.load (internal/modules/cjs/loader.js:599:32)
        at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
        at Function.Module._load (internal/modules/cjs/loader.js:530:3)
        at Module.require (internal/modules/cjs/loader.js:637:17)
      name: 'MongoParseError',
      [Symbol(mongoErrorContextSymbol)]: {} }</p>
  </blockquote>
  
  <p>I tried to reinstall mongodb, but not work. Mongodb version is v4.0.5
  Please help me with this. Thank you!</p>