locale: Cannot set LC_CTYPE to default locale: No such file or directory    
locale: Cannot set LC_MESSAGES to default locale: No such file or directory    
locale: Cannot set LC_ALL to default locale: No such file or directory   

Because  you don't install UTF-8 support ,so that you can do this bellow to solved this problem:
# for english
apt-get -y install language-pack-en-base 
# for chinese
apt-get install -y language-pack-zh-hans 
apt-get install -y language-pack-zh-hans-base 
apt-get install -y language-pack-zh-hant - translation 
apt-get install -y  language-pack-zh-hant-base

# if you wan't to support others you can search languages.
               apt-cache search language-pack   , 
so that  you can get the language you want,remember the package name and install it to be okay.

# if you want set default encoding for system, you can edit /etc/environment
  
  vi /etc/environment
  
 # add content as bellow
   
LANG="zh_CN.UTF-8"
LANGUAGE="zh_CN.UTF-8:zh_CN.GB2312:zh_CN"
SUPPORTED="zh_CN.UTF-8:zh_CN:zh"
SYSFONT="lat0-sun16"
SYSFONTACM="8859-15"

#
dpkg-reconfigure locales


# reboot or let it come into force now.

source /etc/environment # take effect now.
reboot # after you reboot machine ,default encoding to be what you edited.
vim /etc/default/locale 其中改為zh_CN
#check default encoding you can use a simple command.

date