Qt: QObject::connect: No such slot

I am building a small interface where I subclassed RViz which is a visualizer from ROS. According to the official documentation it is possible to re-use and re-implement some of the functions present in this tool. What I am trying to do is creating two different QPushButton that will chnage the view of the renderer implemented. I have some problems with the SIGNAL ans SLOT for my two buttons, in fact as I click them, the view doesn't change. Now RViz has a specific function called getNumViews() that allows the user to set the number of views. In my case I have two views only related to the two QPushButton I am implementing.

As I run the application program I receive the following error QObject::connect: No such slot MyViz::switchToView() and thought that all the passages to correctly set the SIGNALS and SLOT were correctly according to the official documentation. Also for completeness I am using C++11 and from researching more I found that the old version of the SIGNAL and SLOT, which is the one I am using is supposed to be still valid.

Below the code related to the SIGNAL and SLOT that I am running:

myviz.h

public Q_SLOTS:
    void switchToView(QString view);

private:
    rviz::ViewManager *view_man;

myviz.cpp

MyViz::MyViz(QWidget *parent) : QWidget(parent)
{

// operation in the constructor

    QPushButton *topViewBtn = new QPushButton("Top View");
    QPushButton *sideViewBtn = new QPushButton("Side View");


    connect(topViewBtn, SIGNAL(clicked()), this, SLOT(switchToView(QString("Top View"))));
    connect(sideViewBtn, SIGNAL(clicked()), this, SLOT(switchToView(QString("Side View"))));

}

// here is where I set the 2 views possibilities related to the two QPushButtons

void MyViz::switchToView(QString view)
{
    view_man = manager->getViewManager();
    for(int i = 0; i<view_man->getNumViews(); i++)
    {
        if(view_man->getViewAt(i)->getName() == view)
            view_man->setCurrentFrom(view_man->getViewAt(i));
                    return;
        std::cout<<"Did not find view named %s"<<std::endl;
    }
}

Thank you for pointing in the right direction for solving this issue.