ExpressJS – throw er Unhandled error event

You had run another server use the same port like 8080.

Maybe you had run node app in other shell, Please close it and run again.

You can check PORT no. is available or not using

netstat -tulnp | grep <port no>

Alternatively, you can use lsof:

lsof -i :<port no>

Related Posts:

  1. nodemon not working: -bash: nodemon: command not found
  2. Why am I getting “Error socket hang up” response?
  3. ExpressJS – throw er Unhandled error event
  4. npm WARN package.json: No repository field
  5. How can I update NodeJS and NPM to the next versions?
  6. How can I update npm itself?
  7. How to install a previous exact version of a NPM package?
  8. How to solve npm error “npm ERR! code ELIFECYCLE”
  9. How to solve npm error “npm ERR! code ELIFECYCLE”
  10. npm check and update package if needed
  11. Node.exe Stuck at 100% CPU
  12. After command npm start “Missing script:start” error
  13. sudo: npm: command not found
  14. How to resolve Nodejs: Error: ENOENT: no such file or directory
  15. How do I debug error ECONNRESET in Node.js?
  16. How do I debug error ECONNRESET in Node.js?
  17. Please run `npm cache clean`
  18. What is the difference between npm install and npm run build?
  19. What is Express.js?
  20. npm ERR cb() never called
  21. NPM clean modules
  22. ‘node’ is not recognized as an internal or an external command, operable program or batch file while using phonegap/cordova
  23. What does body-parser do with express?
  24. node.js, Error: Cannot find module ‘express’
  25. NPM Start not starting local server
  26. node.js, Error: Cannot find module ‘express’
  27. nodemon – app crashed – waiting for file changes before starting
  28. “Topology was destroyed” when using MongoDB with native driver and Express.js
  29. Error: getaddrinfo ENOTFOUND in nodejs for get call
  30. What is the –save option for npm install?
  31. nodemon not found in npm
  32. nodemon not found in npm
  33. Error: No default engine was specified and no extension was provided
  34. Significance of port 3000 in Express apps
  35. NodeJS / Express: what is “app.use”?
  36. npm ERR! code UNABLE_TO_GET_ISSUER_CERT_LOCALLY
  37. How to Create and Use Enum in Mongoose
  38. What Are “npm run dev” and “npm run prod”
  39. Find the version of an installed npm package
  40. “npm config set registry https://registry.npmjs.org/” is not working in windows bat file
  41. How to get GET (query string) variables in Express.js on Node.js?
  42. How do I uninstall a package installed using npm link?
  43. Error: Cannot find module ‘ejs’
  44. Error: EACCES: permission denied, access ‘/usr/local/lib/node_modules’
  45. First Heroku deploy failed `error code=H10`
  46. In express how do I redirect a user to an external url?
  47. ENOENT, no such file or directory
  48. Error “Cannot find module ‘npmlog'” after “npm update -g”
  49. What is the difference between –save and –save-dev?
  50. ExpressJS : res.redirect() not working as expected?
  51. error: This is probably not a problem with npm. There is likely additional logging output above
  52. Push items into mongo array via mongoose
  53. list all globally installed modules with one command in ubuntu
  54. npm – “Can’t find Python executable “python”, you can set the PYTHON env variable.”
  55. npm update does not do anything
  56. Cannot find module ‘@babel/core’
  57. NodeJS w/Express Error: Cannot GET /
  58. Express.js req.body undefined
  59. Enabling HTTPS on express.js
  60. How to install npm peer dependencies automatically?
  61. Do I commit the package-lock.json file created by npm 5?
  62. npm update broke npm
  63. How to Reinstall Broken npm
  64. heroku is giving me Method not allowed
  65. passport.js passport.initialize() middleware not in use
  66. Cannot npm install due to node-gyp: binding.gyp not found
  67. Downgrade npm to an older version
  68. `node-pre-gyp install –fallback-to-build` failed during MeanJS installation on OSX
  69. npm install resulting in ‘ENOENT: no such file or directory’
  70. ExpressJS vs MeteorJS
  71. When I run `npm install`, it returns with `ERR! code EINTEGRITY` (npm 5.3.0)
  72. Cannot POST / error using express
  73. Route.get() requires callback functions but got a “object Undefined”
  74. nodemon not working properly
  75. E: Unable to locate package npm
  76. npm install errors with Error: ENOENT, chmod
  77. NPM self_signed_cert_in_chain
  78. npm WARN deprecated [email protected]: Use uuid module instead
  79. Advice on loopback.js vs express js
  80. npm “failed to parse json”
  81. Npm Error – Windows NT – How to resolve
  82. How to update a array value in Mongoose
  83. How do I use HTML as the view engine in Express?
  84. Hapi/Joi Validation: How to process text to a specific format
  85. How to properly upgrade node using nvm
  86. How do you uninstall all dependencies listed in package.json (NPM)?
  87. npm start giving error in node.js
  88. npm install with error: `gyp` failed with exit code: 1
  89. npm update check failed
  90. NPM warn message about deprecated package
  91. While doing npm install getting an error as “No such file or directory open”
  92. Webpack – webpack-dev-server: command not found
  93. npm install hangs
  94. bodyParser is deprecated express 4
  95. npm init not working and getting stuck on version
  96. GYP ERR! build error. stack Error: ‘make’ failed with exit code 2
  97. Can pm2 run an ‘npm start’ script
  98. Cannot access mongodb through browser – It looks like you are trying to access MongoDB over HTTP on the native driver port
  99. npm update to specific version (and shrinkwrap)
  100. nvm is not compatible with the npm config “prefix” option:

Leave a Comment