Prose\Ec2InstanceBase::requiresValidHost PHP Method

    protected function requiresValidHost($method)
    {
        if (!$this->vmDetails) {
            throw new E5xx_ActionFailed($method, "No such host '{$this->args[0]}' in the hosts table");
        }
        // did we get anything?
        if (!$this->instance) {
            throw new E5xx_ActionFailed($method, "No such EC2 instance '{$this->instanceName}' at AWS");
        }
    }