在Mac上安装Log.io时出错

Question

当我第一次尝试安装log io时，我收到此错误，使用npm：

sudo npm install -g log.io --user“ubuntu”

Error: setuid user id does not exist
    at /usr/local/lib/node_modules/npm/node_modules/uid-number/uid-number.js:49:16
    at ChildProcess.exithandler (child_process.js:742:7)
    at ChildProcess.emit (events.js:110:17)
    at maybeClose (child_process.js:1015:16)
    at Socket.<anonymous> (child_process.js:1183:11)
    at Socket.emit (events.js:107:17)
    at Pipe.close (net.js:485:12)