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Start your free trialCynthia Smith
8,031 Pointsnpm bugs treehouse-express-auth. I can't get the app to run on the localhost:3000 server.
when I installed nodemon, it still wouldn't run the app. It keeps giving me this error: Error: Cannot find module 'mongoose' at Function.Module._resolveFilename (module.js:469:15) at Function.Module._load (module.js:417:25) at Module.require (module.js:497:17) at require (internal/module.js:20:19) at Object.<anonymous> (/Users/Cynthia/Documents/treehouse/node_authentication_app/app.js:3:16) at Module._compile (module.js:570:32) at Object.Module._extensions..js (module.js:579:10) at Module.load (module.js:487:32) at tryModuleLoad (module.js:446:12) at Function.Module._load (module.js:438:3) [nodemon] app crashed - waiting for file changes before starting...
9 Answers
James Churchill
Treehouse TeacherCynthia,
Hi there! Based upon the error message that you shared, it sounds like you're attempting to load the mongoose
module but you don't have it installed yet. Did you run the command npm install mongoose
before attempting to load the module using require('mongoose')
?
Thanks ~James
Cynthia Smith
8,031 PointsHere is my GitHub link to the app.js file: https://github.com/rockandrollbaby/treehouse.
James Churchill
Treehouse TeacherDo you have a package.json
file?
Cynthia Smith
8,031 PointsI added the package.json file: https://github.com/rockandrollbaby/treehouse.
James Churchill
Treehouse TeacherGreat! Now if you run the command npm install
(in order to ensure that all of your application's dependencies listed in the package.json
file have been installed) and then attempt to run your application using the nodemon
command (assuming that you have nodemon
installed globally), so you still encounter any errors?
Cynthia Smith
8,031 PointsI did the npm install. I ran the nodemon command. The server still won't run. Here are my error messages:
setups-MacBook-Pro:node_authentication_app Cynthia$ nodemon
[nodemon] 1.18.9
[nodemon] to restart at any time, enter rs
[nodemon] watching: .
[nodemon] starting node ./app
(node:2198) DeprecationWarning: open()
is deprecated in mongoose >= 4.11.0, use openUri()
instead, or set the useMongoClient
option if using connect()
or createConnection()
. See http://mongoosejs.com/docs/4.x/docs/connections.html#use-mongo-client
Express app listening on port 3000
connection error: { MongoError: failed to connect to server [localhost:27017] on first connect [MongoError: connect ECONNREFUSED 127.0.0.1:27017]
at Pool.<anonymous> (/Users/Cynthia/Documents/treehouse/node_authentication_app/node_modules/mongodb-core/lib/topologies/server.js:336:35)
at emitOne (events.js:96:13)
at Pool.emit (events.js:188:7)
at Connection.<anonymous> (/Users/Cynthia/Documents/treehouse/node_authentication_app/node_modules/mongodb-core/lib/connection/pool.js:280:12)
at Connection.g (events.js:292:16)
at emitTwo (events.js:106:13)
at Connection.emit (events.js:191:7)
at Socket.<anonymous> (/Users/Cynthia/Documents/treehouse/node_authentication_app/node_modules/mongodb-core/lib/connection/connection.js:189:49)
at Socket.g (events.js:292:16)
at emitOne (events.js:96:13)
at Socket.emit (events.js:188:7)
at emitErrorNT (net.js:1281:8)
at _combinedTickCallback (internal/process/next_tick.js:80:11)
at process._tickCallback (internal/process/next_tick.js:104:9)
name: 'MongoError',
message: 'failed to connect to server [localhost:27017] on first connect [MongoError: connect ECONNREFUSED 127.0.0.1:27017]' }
James Churchill
Treehouse TeacherDo you have the Mongo database daemon running in another command prompt or terminal window? If not, open another command prompt or terminal window and run the command mongod
.
Cynthia Smith
8,031 PointsIt looks like there is a deprecating warning error message:
(node:2605) DeprecationWarning: open()
is deprecated in mongoose >= 4.11.0, use openUri()
instead, or set the useMongoClient
option if using connect()
or createConnection()
. See http://mongoosejs.com/docs/4.x/docs/connections.html#use-mongo-client
Cynthia Smith
8,031 PointsI do have those, but my GitHub account didn't let me upload that many folders and files. I will try the app to see if it runs on the server.
Thank you.
Cynthia Smith
8,031 PointsIt is working! Thank you, James for all of your help!
James Churchill
Treehouse TeacherGreat! You're welcome :)
Cynthia Smith
8,031 PointsHi James,
I am on the Rest API app, and am getting this error message in the terminal:Error: Cannot find module './routes' at Function.Module._resolveFilename (module.js:469:15) at Function.Module._load (module.js:417:25) at Module.require (module.js:497:17) at require (internal/module.js:20:19) at Object.<anonymous> (/Users/Cynthia/Documents/treehouse/rest_api_app/app.js:5:14) at Module._compile (module.js:570:32) at Object.Module._extensions..js (module.js:579:10) at Module.load (module.js:487:32) at tryModuleLoad (module.js:446:12) at Function.Module._load (module.js:438:3) setups-MacBook-Pro:rest_api_app Cynthia$
Cynthia Smith
8,031 PointsI did as you said. Does this mean the server is working?
^Csetups-MacBook-Pro:node_authentication_app Cynthia$ nodemon
[nodemon] 1.18.9
[nodemon] to restart at any time, enter rs
[nodemon] watching: .
[nodemon] starting node ./app
(node:2605) DeprecationWarning: open()
is deprecated in mongoose >= 4.11.0, use openUri()
instead, or set the useMongoClient
option if using connect()
or createConnection()
. See http://mongoosejs.com/docs/4.x/docs/connections.html#use-mongo-client
Express app listening on port 3000
James Churchill
Treehouse TeacherYes, your server is running and listening on port 3000. You're receiving a warning about a method deprecation, but it's just a warning and not an error.
I'm not seeing the public
or routes
folders in your repo. Do you have those in your project on your machine?
Cynthia Smith
8,031 PointsCynthia Smith
8,031 PointsHi James,
I installed Mongoose, thanks. Then, I ran nodemon following the video and it said that I don't have module-connect. Here is my error message:setups-MacBook-Pro:node_authentication_app Cynthia$ nodemon [nodemon] 1.18.9 [nodemon] to restart at any time, enter
rs
[nodemon] watching: . [nodemon] startingnode ./app
module.js:471 throw err; ^Error: Cannot find module 'connect-mongo' at Function.Module._resolveFilename (module.js:469:15) at Function.Module._load (module.js:417:25) at Module.require (module.js:497:17) at require (internal/module.js:20:19) at Object.<anonymous> (/Users/Cynthia/Documents/treehouse/node_authentication_app/app.js:5:42) at Module._compile (module.js:570:32) at Object.Module._extensions..js (module.js:579:10) at Module.load (module.js:487:32) at tryModuleLoad (module.js:446:12) at Function.Module._load (module.js:438:3) at Module.runMain (module.js:604:10) at run (bootstrap_node.js:383:7) at startup (bootstrap_node.js:149:9) at bootstrap_node.js:496:3 [nodemon] app crashed - waiting for file changes before starting...
James Churchill
Treehouse TeacherJames Churchill
Treehouse TeacherCynthia,
Could you share your project code either in a workspace snapshot or in a GitHub repo?
Thanks ~James