Magento 2 Which controller is used for Place Order

Question

I find myself unable to place orders.

I wish to debug this.

Which controller is invoked/used when the place order button is clicked? I would like to put a break point and start from there thanks.

Answer 1

I found a starting point in Quote.

Magento\Quote\Model\QuoteManagement::placeOrder

Answer 2

First controller on place order is

Magento\Checkout\Controller\Onepage\SaveOrder.php firstly it performs validation, if validation passed then It goes to

        $this->getOnepage()->saveOrder();