connect(this, &ZZLoginView::errorLog, Log::instance, &Log::appendErrorLog);
报错：“QMetaObject::Connection QObject::connect(const QObject *,const char *,const char *,Qt::ConnectionType) const”: 无法将参数 3 从“Log *(__cdecl *)(void)”转换为“const Log *”

Log在dll中，如何将信号errorLog连接到槽appendErrorLog中？