javascript - { [Error: listen EADDRINUSE :::5000] -

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what's wrong following server.js file? trying connect deployd heroku , keep getting following error. we're using nitrous, , have configure mongodb port 5000. appreciated. ton!

server.js

// require deployd var deployd = require('deployd');  // configure database etc.  var server = deployd({   port: process.env.port || 5000,   env: 'production',   db: { host: '0.0.0.0', port: 5000, name: 'database_name', credentials: {   username: 'username',   password: 'password' }   } });  // heroku requires these settings sockets work server.sockets.server.set('transports', ["xhr-polling"]);  // start server server.listen();  // debug server.on('listening', function() {  console.log("server listening on port: " + process.env.port); });  // deployd requires server.on('error', function(err) {   console.error(err);   process.nexttick(function() { // give server chance return error process.exit();   }); });

error:

 db:error error: cannot open store: mongoerror: server 0.0.0.0:5000 timed out  @ /home/nitrous/find-volunteerships/node_modules/deployd/lib/db.js:144:17 @ /home/nitrous/find-volunteerships/node_modules/mongodb/lib/mongo_client.js:330:20 @ /home/nitrous/find-volunteerships/node_modules/mongodb/lib/db.js:231:14 @ null.<anonymous> (/home/nitrous/find-volunteerships/node_modules/mongodb/lib/server.js:240:9) @ g (events.js:260:16) @ emittwo (events.js:87:13) @ emit (events.js:172:7) @ /home/nitrous/find-volunteerships/node_modules/mongodb-core/lib/topologies/server.js:493:23 @ commandcallback (/home/nitrous/find-volunteerships/node_modules/mongodb-core/lib/topologies/server.js:1149:20) @ callbacks.flushconnection (/home/nitrous/find-volunteerships/node_modules/mongodb-core/lib/topologies/server.js:103:9) @ null.<anonymous> (/home/nitrous/find-volunteerships/node_modules/mongodb-core/lib/topologies/server.js:408:24) @ emittwo (events.js:87:13) @ emit (events.js:172:7) @ null.<anonymous> (/home/nitrous/find-  volunteerships/node_modules/mongodb-core/lib/connection/pool.js:144:10) @ g (events.js:260:16) @ emittwo (events.js:87:13) +0ms   session:error error removing old sessions: database connection error +14ms unhandled rejection database connection error { [error: listen eaddrinuse :::5000]  code: 'eaddrinuse',   errno: 'eaddrinuse',   syscall: 'listen',   address: '::',   port: 5000 }


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