IMX6 run application error for Qt Creator 4.02

[zung zung]

When I run embedded application on target board
Imx6 Yocto OS send this error

root@phyboard-mira-imx6-3:~# ./HelloWidget
QEglFSImx6Hooks will set environment variable FB_MULTI_BUFFER=2 to enable double buffering and vsync.
If this is not desired, you can override this via: export QT_EGLFS_IMX6_NO_FB_MULTI_BUFFER=1
Unable to query physical screen size, defaulting to 100 dpi.
To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).
VirtualKeyboardInputContextPlugin::create: "qtvirtualkeyboard"
VirtualKeyboardInputContext::setFocusObject
VirtualKeyboardInputContext::setFocusObject
VirtualKeyboardInputContext::setFocusObject
VirtualKeyboardInputContext::setFocusObject

pls tell me if you have solution for fix this
Thanks

[jsulm]

@zung-zung I don't see any errors, just warnings/information. What exactly is the problem?