Guzzle's ConnectException not handled in doRequest()

Hi All,

I am facing some issue add payment gateway in drupal 8.6. With PayPal recurring (Express Checkout).

ncaught PHP Exception GuzzleHttp\\Exception\\ConnectException: "cURL error 7: Failed to connect to api.sandbox.paypal.com port 443: Connection timed out (see http://curl.haxx.se/libcurl/c/libcurl-errors.html)" at /var/www/html/check-point-pal/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php line 186, referer: http://localhost/check-point-pal/admin/commerce/config/payment-gateways/add