scantailor-advanced 1.0.14 build error

/home/user/.cache/aurman/scantailor-advanced/src/scantailor-advanced-1.0.14/ErrorWidget.cpp: In constructor ‘ErrorWidget::ErrorWidget(const QString&, Qt::TextFormat)’:
/home/user/.cache/aurman/scantailor-advanced/src/scantailor-advanced-1.0.14/ErrorWidget.cpp:25:30: error: variable ‘QIcon icon’ has initializer but incomplete type
     QIcon icon(QApplication::style()->standardIcon(QStyle::SP_MessageBoxWarning));
                              ^~~~~
/home/user/.cache/aurman/scantailor-advanced/src/scantailor-advanced-1.0.14/ErrorWidget.cpp:25:37: error: invalid use of incomplete type ‘class QStyle’
     QIcon icon(QApplication::style()->standardIcon(QStyle::SP_MessageBoxWarning));
                                     ^~
In file included from /usr/include/qt/QtWidgets/QApplication:1,
                 from /home/user/.cache/aurman/scantailor-advanced/src/scantailor-advanced-1.0.14/ui_ErrorWidget.h:13,
                 from /home/user/.cache/aurman/scantailor-advanced/src/scantailor-advanced-1.0.14/ErrorWidget.h:22,
                 from /home/user/.cache/aurman/scantailor-advanced/src/scantailor-advanced-1.0.14/ErrorWidget.cpp:19:
/usr/include/qt/QtWidgets/qapplication.h:58:7: note: forward declaration of ‘class QStyle’
 class QStyle;
       ^~~~~~
/home/user/.cache/aurman/scantailor-advanced/src/scantailor-advanced-1.0.14/ErrorWidget.cpp:25:60: error: incomplete type ‘QStyle’ used in nested name specifier
     QIcon icon(QApplication::style()->standardIcon(QStyle::SP_MessageBoxWarning));
                                                            ^~~~~~~~~~~~~~~~~~~~
make[2]: *** [CMakeFiles/stcore.dir/build.make:665: CMakeFiles/stcore.dir/ErrorWidget.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [CMakeFiles/Makefile2:68: CMakeFiles/stcore.dir/all] Error 2
make: *** [Makefile:141: all] Error 2