gnome-control-center 无法以 root 身份找到设置面板(通过 su -)
Issue
- 
使用 sudo 运行
gnome-control-panel,它无法找到设置面板。 - 
在 gnome-terminal 中执行
gnome-control-center printers& 或gnome-control-center datetime时出现弹出窗口,但没有任何信息(空)和数据,且在 gnome-terminal 中有以下错误消息:** (gnome-control-center:86514): WARNING **: 15:37:14.727: Could not find settings panel "printers"** (gnome-control-center:19466): WARNING **: Could not find settings panel "datetime" 
Environment
- Red Hat Enterprise Linux 8
 - control-center-3.26.2-2.el7.x86_64
 
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