Task::getApplicationError

private function getApplicationError(string $default = ''): string
{
	$e = $this->application->GetException();

	if (is_a($e, CApplicationException::class))
	{
		$message = $e->GetString();
		$message = explode('
', $message);
		return $message[0];
	}

	if (
		!is_object($e)
		|| !isset($e->messages)
		|| !is_array($e->messages)
	)
	{
		return $default;
	}

	$message = array_shift($e->messages);

	if (
		is_array($message)
		&& isset($message['text'])
	)
	{
		$message = $message['text'];
	}
	elseif (!is_string($message))
	{
		$message = $default;
	}

	return $message;
}