root@hi3798mv100:~# hp-plugin
Verifying archive integrity... All good.
Uncompressing HPLIP 3.20.3 Plugin Self Extracting Archive..............................................................
HP Linux Imaging and Printing System (ver. 3.20.3)
Plugin Installer ver. 3.0
Copyright (c) 2001-18 HP Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.
Plug-in version: 3.20.3
Installed HPLIP version: 3.20.3
Number of files to install: 64
note: Using PyQt5
qt.qpa.xcb: could not connect to display
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb.
./hplip-plugin-install: line 21: 7987 Aborted python3 ./plugin_install.py $1 $2 $3 $4 $5
一直报错，求解
