从git服务器克隆时，我收到消息：perl：warning：设置语言环境失败

Question

我的操作系统是Linux Ubuntu Desktop 16.04。我使用命令从git服务器克隆文件：

$ git clone basecamp:some_acount

并收到此警告：

Cloning into 'some_acount'...
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
    LANGUAGE = "en_US:en",
    LC_ALL = (unset),
    LC_PAPER = "uk_UA.UTF-8",
    LC_ADDRESS = "uk_UA.UTF-8",
    LC_MONETARY = "uk_UA.UTF-8",
    LC_NUMERIC = "uk_UA.UTF-8",
    LC_TELEPHONE = "uk_UA.UTF-8",
    LC_IDENTIFICATION = "uk_UA.UTF-8",
    LC_MEASUREMENT = "uk_UA.UTF-8",
    LC_TIME = "uk_UA.UTF-8",
    LC_NAME = "uk_UA.UTF-8",
    LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to a fallback locale ("en_US.UTF-8").
remote: Counting objects: 13, done.
remote: Compressing objects: 100% (12/12), done.
remote: Total 13 (delta 0), reused 0 (delta 0)
Receiving objects: 100% (13/13), 7.73 KiB | 0 bytes/s, done.
Checking connectivity... done.

我有两个问题：

1. 我的文件有问题（静态c ++库有 exstension“.a”）？
2. 我该如何修复此警告？