Issues not logged when Paypal Express checkout returns some errors

The paypal Express checkout option at cart takes to "There was an error bringing you to PayPal." error page without actually showing any error in dblog or php log.

Below code does it. I suggest we log some exception/message just before returning this message.

$paypal_response = $payment_gateway_plugin->setExpressCheckout($payment, $extra);

    if (!empty($paypal_response['TOKEN'])) {
      $order = $payment->getOrder();
      $order->setData('paypal_express_checkout', [
        'flow' => 'ec',
        'token' => $paypal_response['TOKEN'],
        'payerid' => FALSE,
        'capture' => $extra['capture'],
      ]);
      $order->save();
    }
    else {
      return [
        '#type' => 'inline_template',
        '#template' => "<span>{{ 'There was an error bringing you to PayPal.'|t }}</span>",
      ];
    }