Port 4200 is already in use. Use '--port' to specify a different port.

npm ERR! Windows_NT 10.0.15063

npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "run" "start"

npm ERR! node v6.10.2

npm ERR! npm  v3.10.10

npm ERR! code ELIFECYCLE

npm ERR! stock@0.0.0 start: `ng serve`

npm ERR! Exit status 1

npm ERR!

npm ERR! Failed at the stock@0.0.0 start script 'ng serve'.

npm ERR! Make sure you have the latest version of node.js and npm installed.

npm ERR! If you do, this is most likely a problem with the stock package,

npm ERR! not with npm itself.

npm ERR! Tell the author that this fails on your system:

npm ERR!     ng serve

npm ERR! You can get information on how to open an issue for this project with:

npm ERR!     npm bugs stock

npm ERR! Or if that isn't available, you can get their info via:

npm ERR!     npm owner ls stock

npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:

npm ERR!     C:\Users\39502\auction\npm-debug.log