求助大神：qt.qpa.plugin: Could not find the Qt platform plugin "xcb" in ""

[houjack1]

cartopgrapher 运行demo时
roslaunch cartographer_ros offline_backpack_2d.launch bag_filenames:=${HOME}/Desktop/cartographer_paper_deutsches_museum.bag
报错：
qt.qpa.plugin: Could not find the Qt platform plugin “xcb” in “”
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.