$ qcam

(qcam:6829): dbind-WARNING **: 12:24:23.804: Couldn't register with accessibility bus: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
[0:01:11.851026851] [6829]  INFO Camera camera_manager.cpp:313 libcamera v0.3.1
[0:01:17.354047746] [6829]  INFO Camera camera.cpp:1183 configuring streams: (0) 1280x720-MJPEG
Using software format conversion from MJPEG
qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 494, resource id: 9444706, major code: 40 (TranslateCoords), minor code: 0