> stock@0.0.0 start E:\stock

> ng serve

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

npm ERR! code ELIFECYCLE

npm ERR! errno 1

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.

npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:

npm ERR!     C:\Users\Baby\AppData\Roaming\npm-cache\_logs\2018-02-20T07_35_09_676Z-debug.log

Process finished with exit code 1