我已经在我的 Ubuntu 14.04 (Trusty Tahr)上安装了 LDAP 和phpLDAPadmin。它正在工作，我能够访问 phpLDAPadmin GUI，也能够使用 GUI 创建 OU 和组，但我无法创建用户。
当我尝试创建用户时，出现以下错误：
Error trying to get a non-existant value (appearance,password_hash)
This template uses a selection list for attribute [gidNumber], however the selection list is empty.
You may need to create some dependancy entries in your LDAP server so that this attribute renders with values.
Alternatively, you may be able to define the appropriate selection values in the template file.
File /usr/share/phpldapadmin/lib/functions.php (444)
Function error (a:5:{i:0;s:67:"Error …