Qt Error 모음

* xcb 없을시

sudo apt-get install "^libxcb." libx11-xcb-dev libglu1-mesa-dev libxrender-dev libxi-dev

* systemd 서비스로 maroon 앱실행시

 7월 18 11:28:35 kwangjo maroon[2623]: QXcbConnection: Could not connect to display