PHP Try ... catch how to?

Developers API
1

At the moment if “addRecord” face record duplicate, on server it throws Internal Server Error like this:

Internal Server Error

Record already exists. [/var/www/domain.com/inc/vendor/Cloudflare/sdk/src/Adapter/ResponseException.php:38]

[/var/www/domain.com/inc/vendor/Cloudflare/sdk/src/Adapter/Guzzle.php:88] Cloudflare\API\Adapter\ResponseException::fromRequestException()
[/var/www/domain.com/inc/vendor/Cloudflare/sdk/src/Adapter/Guzzle.php:46] Cloudflare\API\Adapter\Guzzle->request()
Cloudflare\API\Endpoints\DNS->addRecord()

How to properly catch this error and display only this part?

Record already exists.

My try does not work – the same ISE is shown:

try {
            $this->dns->addRecord($this->f3->cloudflare['zone_id'], $type, $name, $content);
        } catch(exception $e) {
            print_r($e->getMessage());
        }