angularjs - Error during installation of nodejs -

$ yo --version && bower --version && grunt --version 

when run command got error shown below :

1.6.0 1.7.7 grunt-cli v0.1.13 module.js:341     throw err;     ^  error: cannot find module './schema/safe'     @ function.module._resolvefilename (module.js:339:15)     @ function.module._load (module.js:290:25)     @ module.require (module.js:367:17)     @ require (internal/module.js:16:19)     @ object.<anonymous> (c:\users\ibm_admin\node_modules\grunt\node_modules\js-yaml\lib\js-yaml\loader.js:8:22)     @ module._compile (module.js:413:34)     @ object.module._extensions..js (module.js:422:10)     @ module.load (module.js:357:32)     @ function.module._load (module.js:314:12)     @ module.require (module.js:367:17) 

how resolve issue?