Cannot read property 'prototype' of undefined

[garimachhabra20]

Getting the error written below on running command "gulp serve".
Node version : v8.2.1
Npm version : 5.3.0

AzureResourceVisualizer/node_modules/karma/node_modules/socket.io/lib/store.js:35
Store.prototype.proto = EventEmitter.prototype;
^

TypeError: Cannot read property 'prototype' of undefined
at Object. (/AzureResourceVisualizer/node_modules/karma/node_modules/socket.io/lib/store.js:35:41)
at Module._compile (module.js:569:30)
at Object.Module._extensions..js (module.js:580:10)
at Module.load (module.js:503:32)
at tryModuleLoad (module.js:466:12)
at Function.Module._load (module.js:458:3)
at Module.require (module.js:513:17)
at require (internal/module.js:11:18)
at Object. (/AzureResourceVisualizer/node_modules/karma/node_modules/socket.io/lib/manager.js:16:13)
at Module._compile (module.js:569:30)