QML module "QtQuick" is not installed

#include "authenticationwindow.h"
#include "ui_authenticationwindow.h"
 
AuthenticationWindow::AuthenticationWindow(QWidget *parent) :
    QQuickWidget(parent)
{
    connect(this, SIGNAL(statusChanged(QQuickWidget::Status)),
            SLOT(slotCatchQmlErrors(QQuickWidget::Status)));
 
    QUrl source("../data/qml/UserLogin.qml");
    resize(400, 250);
 
    model = nullptr;
    root = nullptr;
    context = nullptr;
 
    setResizeMode(QQuickWidget::SizeRootObjectToView);
    setAttribute(Qt::WA_AlwaysStackOnTop);
    setClearColor(Qt::transparent);
    setWindowFlags(Qt::FramelessWindowHint);
    setSource(source);
 
    root = rootObject();
 
    context = rootContext();
    connect(root, SIGNAL(signalClose()), this, SIGNAL(signalCloseEvent()));
    connect(root, SIGNAL(signalOk(QString, QString, bool)), this,
            SIGNAL(signalOk(QString, QString, bool)));  // 888
    connect(root, SIGNAL(signalPressed()), this, SLOT(slotPressed()));
    connect(root, SIGNAL(signalReleased()), this, SLOT(slotReleased()));
    connect(root, SIGNAL(signalPositionChanged()), this,
            SLOT(slotPositionChanged()));
 
    if (!root)
    {
        qDebug() << "not connected: AuthenticationWindow";
        return;
    }
}
 
void AuthenticationWindow::slotCatchQmlErrors(QQuickWidget::Status s)
{
    if (s == QQuickWidget::Error)
    {
        qDebug() << "QML ERROR!";
        foreach (QQmlError err, errors()) {
            qDebug() << err.toString();
            qDebug() << err.description();
        }
    }
}
...

#pragma once
 
#include <QQuickWidget>
#include <QQuickItem>
#include <QQmlContext>
#include <QQmlEngine>
 
#include "model/usermodel.h"
 
class AuthenticationWindow : public QQuickWidget
{
    Q_OBJECT
public:
    explicit AuthenticationWindow(QWidget *parent = 0);
    ~AuthenticationWindow();
    QPushButton *butRegistration;
    UserModel *model;
    void setModel(UserModel *m);
public slots:
    void slotReturnPassword();
private slots:
    void slotOk();
    void slot();
    void slotPressed();
    void slotReleased();
    void slotPositionChanged();
    void slotCatchQmlErrors(QQuickWidget::Status s);
signals:
    void signalOk(QString us, QString psw, bool b);
    void signalCloseEvent();
private:
    QPoint difference;
    QString log;
    QString nolog;
    QLabel *lab;
    QLineEdit *lineUser;
    QLineEdit *linePassword;
    QPushButton *butOk;
    void closeEvent(QCloseEvent *event);
    QQuickItem *root;
    QQmlContext *context;
};

QT  += core gui svg xml qml quick quickwidgets sql #multimedia
 
PRECOMPILED_HEADER += ../plugin/include/PreComp.h
 
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 
TARGET = ConceptBA
TEMPLATE = app
DESTDIR = ../bin
 
PATH_BIN += $$[QT_INSTALL_PREFIX]
QT_BUILD = $$quote($$replace(PATH_BIN, /, \\))
 
defineReplace(copyFile){
    return ($$quote(cmd /c copy /y $$1 $$2$$escape_expand(\n\t)))
}
 
INCLUDEPATH += \
../plugin/include \
../plugin/controler
 
SOURCES += main.cpp\
    window/MainWindow.cpp \
    window/WindowPlugin.cpp \
    core/settings/UserWindow.cpp \
...
 
HEADERS  += \
    ../plugin/include/BAInterface.h \
    BATemplate.h \
    model/12 \
...
 
FORMS += \
    window/MainWindow.ui \
    window/WindowPlugin.ui \
    core/style/TypeDisplay.ui \
...
 
 
RC_FILE = mainIcon.rc
COPY_BIN_DIR = $$quote(..\\bin\\*)

QT += qml quick widgets