用yo安装angular的时候出现了这样的错误？

 /usr/local/lib/node_modules/yo/node_modules/configstore/index.js:46
                                throw err;
                                      ^
Error: EACCES, permission denied '/root/.config/configstore/insight-yo.json'
You don't have access to this file.

    at Error (native)
    at Object.fs.openSync (fs.js:500:18)
    at Object.fs.readFileSync (fs.js:352:15)
    at Object.create.all.get (/usr/local/lib/node_modules/yo/node_modules/configstore/index.js:27:26)
    at Object.Configstore (/usr/local/lib/node_modules/yo/node_modules/configstore/index.js:20:44)
    at new Insight (/usr/local/lib/node_modules/yo/node_modules/insight/lib/index.js:37:34)
    at Object.<anonymous> (/usr/local/lib/node_modules/yo/lib/cli.js:130:15)
    at Module._compile (module.js:460:26)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)