Google Calendar API with a Service Account Problems - php

Question

I've been trying for days to get Google's Calendar PHP API working on my local Laravel development site. Here's the problem:
I'm using a service account so I can perform functions on one calendar (the service accounts calendar). I'm not authenticating users and requesting access to their calendar.
I've verified everything from my client ID, the service email address, the key.P12 file, still nothing happens.
Here is my code:
$key = File::get($this->key);
$credentialObj = new \Google_Auth_AssertionCredentials(
$this->serviceAccountName,
array('https://www.googleapis.com/auth/calendar'),
$key,
'notasecret'
);
$client = new \Google_Client();
$client->setApplicationName($this->applicationName);
$client->setClientId($this->clientId);
$client->setAssertionCredentials($credentialObj);
\session_start();
$calendarServiceObj = new \Google_Service_Calendar($client);
$events = $calendarServiceObj->events->listEvents('mygmail#gmail.com');
dd($events->getItems());
I've even tried using Google's own example here:
https://github.com/google/google-api-php-client/blob/master/examples/service-account.php
No errors, nothing. Just a blank error page every single time. I've tried so many examples all over the internet, even here on stack overflow, and at the end, all I get is a 'This webpage is not available'. This happens on every browser.
Laravel is set to development mode so all errors are displayed, and I've even force set the ini using ini_set("display_errors", 1);.
I know everything works fine up until I request anything from the service object. All the calendar api's are set to on in my developer account. Does my local development domain need to have SSL enabled?
It be so nice if I could figure out at least what is going on, but with this obscure error, I have no idea.
If anyone has any tips, I'd really appreciate it. Thanks!!
EDIT: I've scoured through googles API code, and this is exactly where the request fails:
vendor\google\apiclient\src\Google\Signer\P12.php
Line 77 to 92:
public function sign($data)
{
if (version_compare(PHP_VERSION, '5.3.0') < 0) {
throw new Google_Auth_Exception(
"PHP 5.3.0 or higher is required to use service accounts."
);
}
$hash = defined("OPENSSL_ALGO_SHA256") ? OPENSSL_ALGO_SHA256 : "sha256";
//If I die(); here, I receive the response
if (!openssl_sign($data, $signature, $this->privateKey, $hash)) {
//Something happens here, or inside the openssl_sign command, I never reach the exception
throw new Google_Auth_Exception("Unable to sign data");
}
//It never reaches here
return $signature;
}
In my PHP Info:

Answer 1

Solved by updating PHP. I was using Softaculous AMPPs 2.3 with PHP 5.4.27. Upgrading to AMPPs 2.6 fixed the issue. My Open SSL in my config is now:
Nothing was done to my code above since, and it now works. This was definitely an open ssl issue. Anyone receiving an ERR_CONNECTION_RESET must update their open_ssl version.
I hope this helps anyone trying to figure this out.