Qt 5.14.0: QtQuick Extras module doesn't work on Android

I .example.extra: Late-enabling -Xcheck:jni
I libthemeutils: Theme： libthemeutil.so load success
I Perf    : Connecting to perf service.
W System  : ClassLoader referenced unknown path:
I QtCore  : Start
I Qt      : qt started
I Adreno  : QUALCOMM build                   : 2c6a1c7, I1490fecf6e
I Adreno  : Build Date                       : 02/04/19
I Adreno  : OpenGL ES Shader Compiler Version: EV031.25.03.02
I Adreno  : Local Branch                     :
I Adreno  : Remote Branch                    :
I Adreno  : Remote Branch                    :
I Adreno  : Reconstruct Branch               :
I Adreno  : Build Config                     : S L 6.0.7 AArch64
D vndksupport: Loading /vendor/lib64/hw/gralloc.msm8998.so from current namespace instead of sphal namespace.
I Adreno  : PFP: 0x005ff112, ME: 0x005ff066
I ConfigStore: android::hardware::configstore::V1_0::ISurfaceFlingerConfigs::hasWideColorDisplay retrieved: 0
I ConfigStore: android::hardware::configstore::V1_0::ISurfaceFlingerConfigs::hasHDRDisplay retrieved: 0
I OpenGLRenderer: Initialized EGL, version 1.4
D OpenGLRenderer: Swap behavior 2
D vndksupport: Loading /vendor/lib64/hw/android.hardware.graphics.mapper@2.0-impl.so from current namespace instead of sphal namespace.
D vndksupport: Loading /vendor/lib64/hw/gralloc.msm8998.so from current namespace instead of sphal namespace.
W libextras_arm64-v8a.so: QQmlApplicationEngine failed to load component
W libextras_arm64-v8a.so: qrc:/main.qml:11 Type DelayButton unavailable
W libextras_arm64-v8a.so: file:///data/app/org.qtproject.example.extras-N3TxllNTWFdupybDva2mDg==/lib/arm64/DelayButton.qml:-1 No such file or directory
12-24 21:59:13.485 18921 18939 W libextras_arm64-v8a.so:
W libextras_arm64-v8a.so: exit app 0

"org.qtproject.example.extras" died.