qt virtual keyboard input method is not set

i use yocto(warrior) fsl-community -bsp i cloned from

[git clone upstream/warrior git://code.qt.io/yocto/meta-qt5.git|git://code.qt.io/yocto/meta-qt5.git]

then when i have focus on my TextField i get "input method is not set" error message

here is my complete LOG of virtual keyboard

PlatformInputContext::update(): QFlags<Qt::InputMethodQuery>(ImMicroFocus|ImAnchorRectangle)
PlatformInputContext::hideInputPanel()
PlatformInputContext::update(): QFlags<Qt::InputMethodQuery>(ImQueryInput)
PlatformInputContext::showInputPanel()
QVirtualKeyboardInputEngine::virtualKeyPress()
QVirtualKeyboardInputEngine::virtualKeyRelease()
input method is not set
QVirtualKeyboardInputEngine::virtualKeyPress()
QVirtualKeyboardInputEngine::virtualKeyRelease()
input method is not set
QVirtualKeyboardInputEngine::virtualKeyPress()
QVirtualKeyboardInputEngine::virtualKeyRelease()
input method is not set
QVirtualKeyboardInputEngine::virtualKeyPress()
QVirtualKeyboardInputEngine::virtualKeyRelease()
input method is not set
QVirtualKeyboardInputEngine::virtualKeyPress()
QVirtualKeyboardInputEngine::virtualKeyRelease()
input method is not set
QVirtualKeyboardInputEngine::virtualKeyPress()
QVirtualKeyboardInputEngine::virtualKeyRelease()
input method is not set

is use Qt Quick Virtual Keyboard - Basic Example,

qtvirtualkeyboard shown, but i when i press a key it wont add text to TextFeild