我正在尝试在我自己的服务器上安装OpenEdX（操作系统：Linux Ubuntu Server 12.04），但我遇到了同样的错误。谁能帮我？
TASK: [ insights | install bower dependencies]**************************
failed: [localhost] => {"changed"; true, "cmd";
"./edx/app/insights/nodeenvs/insights/bin/activate &&
/edx/app/insights/edx_analystics_dashboard/node_modules/.bin/bower install --production --config.interactive=false", "delta": "0:02:32.056040", "ende"; "2015-05-01 05:32:47.289788", "rc":1, "start": "2015-05-01 05:38:33.233748", "waring": []}
stderr: bower globalize#1.0.0-alpha.17 ECMDERR Failed to execute "git ls-remote --tags --heads git://github.com/jquery/globalize.git", exit code of #128 fatal: unable to connect to github.com:github.com[0: 192.30.252.130]: errno=Connection timed out
Additional error details:
fatal: unable to connect to github.com:
github.com[0: 192.30.252.130]: errno=Connection timed out
stdout: bower globalize#1.0.0-alpha.17 not-cached git://github.com/jquery/globalize.git#1.0.0-alpha.17
bower globalize#1.0.0-alpha.17 resolve git://github.com/jquery/globalize.git#1.0.0-alpha.17
确保允许你访问具有 git://url架构的存储库（该架构使用端口9418，有时被防火墙阻止）
您可以先测试相同的安装过程：
git config --global url."https://".insteadOf git://
（请参阅"无法连接到 github.com 进行克隆"）