QPainter::drawPath crash in debug mode, but it works normally in release mode

void MyItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget) 
{
    //something else
   painter->save();
   if (this->GetLock())
   {
       painter->setBrush(QColor(51, 153, 255));
     painter->setOpacity(0.2);
   }
   painter->drawPath(path());     //When crashing, the breakpoint stops here
    painter->restore(); 
}