Error: Cannot find module 'http-proxy'

[syesudas]

I am getting below error.
i tried installing npm install -g http-proxy
It did not work

Error: Cannot find module 'http-proxy'
at Function.Module._resolveFilename (module.js:326:15)
at Function.Module._load (module.js:277:25)
at Module.require (module.js:354:17)
at require (internal/module.js:12:17)
at D:\Data\EMR\My_Projects\Quizzler\tools\webserver\node_modules\httpServers.coffee:30:14
at Object. (D:\Data\EMR\My_Projects\Quizzler\tools\webserver\node_modules\httpServers.coffee:62:18)
at Object. (D:\Data\EMR\My_Projects\Quizzler\tools\webserver\node_modules\httpServers.coffee:27:1)
at Module._compile (module.js:398:26)
at Object.loadFile (C:\Users\310197830\AppData\Roaming\npm\node_modules\coffee-script\lib\coffee-script\register.js:16:19)
at Module.load (C:\Users\310197830\AppData\Roaming\npm\node_modules\coffee-script\lib\coffee-script\register.js:45:36)
at Function.Module._load (module.js:301:12)
at Module.require (module.js:354:17)
at require (internal/module.js:12:17)
at Object. (D:\Data\EMR\My_Projects\Quizzler\tools\webserver\run.coffee:14:9)
at Object. (D:\Data\EMR\My_Projects\Quizzler\tools\webserver\run.coffee:14:3)
at Module._compile (module.js:398:26)
at Object.exports.run (C:\Users\310197830\AppData\Roaming\npm\node_modules\coffee-script\lib\coffee-script\coffee-script.js:134:23)
at compileScript (C:\Users\310197830\AppData\Roaming\npm\node_modules\coffee-script\lib\coffee-script\command.js:224:29)
at compilePath (C:\Users\310197830\AppData\Roaming\npm\node_modules\coffee-script\lib\coffee-script\command.js:174:14)
at Object.exports.run (C:\Users\310197830\AppData\Roaming\npm\node_modules\coffee-script\lib\coffee-script\command.js:98:20)
at Object. (C:\Users\310197830\AppData\Roaming\npm\node_modules\coffee-script\bin\coffee:7:41)
at Module._compile (module.js:398:26)
at Object.Module._extensions..js (module.js:405:10)
at Module.load (module.js:344:32)
at Function.Module._load (module.js:301:12)
at Function.Module.runMain (module.js:430:10)
at startup (node.js:141:18)
at node.js:980:3