error: no matching function for call to ‘QVariant::QVariant(QMetaType::Type, std::nullptr_t)’

agent:2020/08/19 06:15:16 build.go:302: jsapi/qjsvalue.cpp: In member function ‘QVariant QJSValue::toVariant() const’:
agent:2020/08/19 06:15:16 build.go:302: jsapi/qjsvalue.cpp:582:52: error: no matching function for call to ‘QVariant::QVariant(QMetaType::Type, std::nullptr_t)’
agent:2020/08/19 06:15:16 build.go:302:          return QVariant(QMetaType::Nullptr, nullptr);
agent:2020/08/19 06:15:16 build.go:302:                                                     ^
agent:2020/08/19 06:15:16 build.go:302: In file included from /home/qt/work/install/include/QtCore/qabstractitemmodel.h:46,
agent:2020/08/19 06:15:16 build.go:302:                  from /home/qt/work/install/include/QtCore/QtCore:10,
agent:2020/08/19 06:15:16 build.go:302:                  from ../../include/QtQml/QtQmlDepends:3:
agent:2020/08/19 06:15:16 build.go:302: /home/qt/work/install/include/QtCore/qvariant.h:274:12: note: candidate: ‘QVariant::QVariant(QVariant&&)’
agent:2020/08/19 06:15:16 build.go:302:      inline QVariant(QVariant &&other) noexcept : d(other.d)
agent:2020/08/19 06:15:16 build.go:302:             ^~~~~~~~