为安卓构建时出现Qt错误

当我尝试在适用于Android的Qt Creator中构建我的项目时，会发生以下错误：

Warning: QML import could not be resolved in any of the import paths: Qt.Class
Warning: QML import could not be resolved in any of the import paths: QtQuick.Extras.Private.CppUtils
Warning: QML import could not be resolved in any of the import paths: QtQuick.Extras.Private.CppUtils
Warning: QML import could not be resolved in any of the import paths: QtQuick.Controls.Material.impl
Warning: QML import could not be resolved in any of the import paths: QtQuick.Controls.impl
Warning: QML import could not be resolved in any of the import paths: QtQuick.Controls.Universal.impl
FAILURE: Build failed with an exception.

这是我.pro文件内容：

QT += qml quick
CONFIG += c++11
SOURCES += main.cpp 
downloader.cpp 
filemanager.cpp
HEADERS += 
downloader.h 
filemanager.h
RESOURCES += qml.qrc
QT += network
QT += xml
QT += gui
# Additional import path used to resolve QML modules in Qt Creator's code model
QML_IMPORT_PATH = /home/muhammad/Qt5.9.0/5.9/android_armv7/qml/
# Additional import path used to resolve QML modules just for Qt Quick Designer
#QML_DESIGNER_IMPORT_PATH =
# The following define makes your compiler emit warnings if you use
# any feature of Qt which as been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS
# You can also make your code fail to compile if you use deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target
DISTFILES += 
android/AndroidManifest.xml 
android/gradle/wrapper/gradle-wrapper.jar 
android/gradlew 
android/res/values/libs.xml 
android/build.gradle 
android/gradle/wrapper/gradle-wrapper.properties 
android/gradlew.bat 
android/AndroidManifest.xml 
android/gradle/wrapper/gradle-wrapper.jar 
android/gradlew 
android/res/values/libs.xml 
android/build.gradle 
android/gradle/wrapper/gradle-wrapper.properties 
android/gradlew.bat
ANDROID_PACKAGE_SOURCE_DIR = $$PWD/android

我该如何解决？