504 Gateway Time-out after updated to 1.5.7

Any update on this issue? I was able to pull this code from the file mentioned in the error. It looks like an issue communicating with Salesforce?

$url = self::OAUTH_URL;
	$body = [
		'grant_type' => 'refresh_token',
		'client_id' => $this->client_id,
		'client_secret' => $this->client_secret,
		'refresh_token' => $this->refresh_token,
	];
	$args = [
		'body' => $body,
		'timeout' => '5',
		'redirection' => '5',
		'httpversion' => '1.0',
		'blocking' => true,
		'headers' => ["Content-type: application/json"],
		'cookies' => [],
	];

	$response = wp_remote_post($url, $args);

$response = json_decode(wp_remote_retrieve_body($response));