Segmentation fault error with TLS

[cBevilaqua]

Hello,

I'm trying to connect but i'm getting the error:
[1] 91694 segmentation fault

My code is:

`<?php
$client = new Mosquitto\Client('Ruckus');
$client->onConnect(function($code, $message) use ($client) {
$client->subscribe('1.0.0/LOC/SPOT_GPB/#', 0);
});

$client->onMessage(function($message) {
echo $message->topic, "\n", $message->payload, "\n\n";
});

$client->onLog(function($message) {
echo $message;
});

// set tls psk
$identity = 'vspot';
$key = '3132333435363738';
$client->setTlsPSK($key, $identity);
$client->setTlsInsecure(true);
$client->setTlsOptions(Mosquitto\Client::SSL_VERIFY_NONE, 'tlsv1.2', null);

$client->connect('192.168.4.60', 8883);
$client->loopForever();`

I'm using PHP 7.2.16 on Mac OSX 10.14.5

Do you have some idea of what could be causing the error?
Thanks!