解决qt.qpa.xcb: could not connect to display问题

以服务器作为远程解释器，本地pycharm或vscode调试时出现如下错误：

qt.qpa.xcb: could not connect to display
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "/home/xx/anaconda3/lib/python3.8/site-packages/cv2/qt/plugins" 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: xcb, eglfs, minimal, minimalegl, offscreen, vnc

第一步：安装远程ssh软件MobaXterm（或其他支持图形回传的远程软件）
附上安装包链接：https://pan.baidu.com/s/1ICNpYK-95tCoMjZMJRcZlg
提取码：ohgp
输入下面命令echo $DISPLAY
第二步：在VScode终端，输入：export DISPLAY=localhost:10.0

注：每次都需要