How to debug or enable logging in a function

Is there a way to enable logging, and or debug this function in Magento?
The invoices is created successfully, but the capture online doesn’t work.

private function createInvoice(Order $order, int $capture, int $notifyCustomer, Phrase $comment): OrderInvoice
    {
        $invoice = $this->invoiceService->prepareInvoice($order);
        if (!$invoice) {
            throw new LocalizedException(__('Can not save the invoice right now.'));
        }
        if (!$invoice->getTotalQty()) {
            throw new LocalizedException(__('You can not create an invoice without products.'));
        }
        $comment = $comment->render();
        $invoice->addComment($comment, $notifyCustomer);
        $invoice->setCustomerNote($comment);
        switch ($capture) {
            case OrderInvoice::CAPTURE_ONLINE:
                $invoice->setRequestedCaptureCase(OrderInvoice::CAPTURE_ONLINE);
                break;
            case OrderInvoice::CAPTURE_OFFLINE:
                $invoice->setRequestedCaptureCase(OrderInvoice::CAPTURE_OFFLINE);
                break;
        }
        $invoice->register();
        $invoice->getOrder()->setCustomerNoteNotify($notifyCustomer);
        $invoice->getOrder()->setIsInProcess(true);
        $saveTransaction = $this->transactionFactory->create();
        $saveTransaction->addObject($invoice)->addObject($invoice->getOrder());
        $saveTransaction->save();
        return $invoice;
    }

Thanks,