Fixed an error when setting locale for ubuntu

When setting locale for ubuntu, the following error is reported: locale: Cannot set LC_MESSAGES to default locale: No such file or directorylocale: Cannot set LC_ALL to default locale: no such file or directoryLANG = zh_CN.UTF-8LC_CTYPE = en_US.UTF-8LC_NUMERIC = "zh_CN.UTF-8" LC_TIME = "zh_CN.UTF-8" LC_COLLATE = "zh_CN.UTF-8" LC_MONETARY = "zh_CN.UTF-8" LC_MESSAGES = "zh_CN.UTF-8" LC_PAPER = "zh_CN.UTF-8" LC_NAME = "" "zh_CN.UTF-8" LC_ADDRESS = "zh_CN.UTF-8" LC_TELEPHONE = "zh_CN.UTF-8" LC_MEASUREMENT = "zh_CN.UTF-8" LC_IDENTIFICATION = "zh_CN.UTF-8" LC_ALL = apt-get install language-pack can be addressed by installing the appropriate language pack -zh-hans-base is not guaranteed wrong :) LANG = zh_CN.UTF-8LC_CTYPE = en_US.UTF-8LC_NUMERIC = "zh_CN.UTF-8" LC_TIME = "zh_CN.UTF-8" LC_COLLATE = "zh_CN.UTF-8" LC_MONETARY = "zh_CN.UTF-8" LC_MESSAGES = "zh_CN.UTF-8" LC_PAPER = "zh_CN.UTF-8" LC_NAME = "zh_CN.UTF-8" LC_ADDRESS = "zh_CN.UTF-8" LC_TELEPHONE = "zh_CN.UTF-8" LC_MEASUREMENT = "zh_CN.UTF-8" LC_IDENTIFICATION = "zh_CN.UTF-8" LC_ALL ="