QT小白,刚安装完QT,运行QT提示函数声明找不到等问题看报错和我写的helloworld没有关联,像是QT依赖库的问题有大佬可以指导一下吗?/home/test/qt_install/5.9.2/gcc_64/include/QtCore/qbytearraylist.h:75: error: return type ‘class QByteArray’ is incomplete75 | { return QtPrivate::QByteArrayList_join(self(), sep.constData(), sep.size()); }| ^/home/test/qt_install/5.9.2/gcc_64/include/QtCore/qbytearraylist.h:77: error: return type ‘class QByteArray’ is incomplete77 | { return QtPrivate::QByteArrayList_join(self(), &sep, 1); }| ^