TLS Certificate Authentication Not Working

[fightinglawnornaments]

Problem:
I cannot connect to my Mosquitto broker when using TLS certificate authentication.

This connection issue only happens when using Mosquitto-PHP and using TLS certificate authentication. My CA certificate is stored in the same folder as my php file. The error I get is listed at the bottom of my post: the mosquitto broker outputs a 'Socket error on client' message. I have no problems connecting when I am just using username and password but NOT using TLS certificates. I have a different client on a completely different raspberryPi using python (python paho-mqtt, not using Mosquitto-PHP) that connects to my Mosquitto broker successfully using TLS certificate authentication. Therefore I don't believe the problem is with my Mosquitto broker, I believe the problem is with my code or with Mosquitto-PHP.I have been trying to solve this for about 2 weeks now. Any help would be greatly appreciated!

My code:
use Mosquitto\Client;
define('CLIENT_ID', "pubclient_" + getmypid());
$topic = 'myTestTopic';
$qos = 1;
$myusername = 'myTestUsername';
$mypassword = 'myTestPassword';
/* Construct a new client instance, passing a client ID of “MyClient” /
$client = new Mosquitto\Client(CLIENT_ID);
/ CA certificate is contained in a file /
$client->setTlsCertificates('/var/www/html/ca.crt');
$client->setCredentials($myusername,$mypassword);
$client->setTlsOptions(Mosquitto\Client::SSL_VERIFY_PEER,'tlsv1.2');
$client->setTlsInsecure(true);
$client->onMessage(function($message) {
/ Display the message's topic and payload */
echo $message->topic, "\n", $message->payload, "\n\n";
});
$client->connect('192.168.86.27', 1883);
$client->loop(2000);
$client->disconnect();

Mosquitto Log Output:
1569687780: New connection from 192.168.86.27 on port 1883.
1569687780: Socket error on client , disconnecting.

[digitalprecision]

I am having the same issue, when using TLS I am unable to connect, it just silently fails. I can connect with the same cert stack (root, cert, key) via mosquitto_pub but will not work when going through the php wrapper. Any help would be appreciated.