Cannot read property 'prototype' of undefined

[hikmahgumelar]

info: Starting app...

/home/user/projectx/sailjs/sails-jwt-example/node_modules/socket.io/lib/store.js:35
Store.prototype.proto = EventEmitter.prototype;
^

TypeError: Cannot read property 'prototype' of undefined
at Object. (/home/gugum/projectx/sailjs/sails-jwt-example/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. (/home/gugum/projectx/sailjs/sails-jwt-example/node_modules/socket.io/lib/manager.js:16:13)
at Module._compile (module.js:569:30)
$ lsTypeError: Cannot read property 'prototype' of undefined
TypeError: Cannot read property 'prototype' of undefined
at Object. (/home/gugum/projectx/sailjs/sails-jwt-example/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)lsTypeError:: command not found
$ at Object. (/home/user/projectx/sailjs/sails-jwt-example/node_modules/socket.io/lib/store.js:35:41)
bash: syntax error near unexpected token (' $ at Module._compile (module.js:569:30) bash: syntax error near unexpected token ('
$ at Object.Module._extensions..js (module.js:580:10)