I want to create a laravel job that send sms messages to my defined defaulters query rather than using the user model

Question

see the code trying to use the user model

class SendBirthdayMessage implements ShouldQueue
{
    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;

    private $user;
    private $twilioClient;

    /**
     * Create a new job instance.
     * @param User $user: A single user instance whose birthday is current date.
     * @throws ConfigurationException
     * @return void
     */
    public function __construct(User $user)
    {
        $this->user = $user;
        $sid = config('services.twilio.account_sid');
        $token = config('services.twilio.auth_token');
        $this->twilioClient = new Client($sid, $token);
    }

then see what i am trying to implement

class SendDefaulterMessage implements ShouldQueue
{
    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;

    
    private $twilioClient;
    private  $defaulters = DB::table('forrent')
    ->join('landlord','forrent.LandLordID','=','landlord.LandLordID')
    ->join('tenant','forrent.AccountNo','=','tenant.AccountNo')
    ->join('property','tenant.PropertyID','=','property.PropertyID')
    ->select(DB::raw("CONCAT(landlord.Title,' ',landlord.OtherNames,' ',landlord.Surname) as Lfullname"),DB::raw("CONCAT(tenant.Title,' ',tenant.OtherNames,' ',tenant.Surname) as Tfullname"),'tenant.RegDate as RegDate', 'tenant.AccountNo as Accno','tenant.Rent as Rent', 'tenant.NoOfProperty as NoOfProperty','tenant.Address as Address','tenant.Phone as Phone','forrent.LastPeriod as LastPeriod','forrent.LPDate as Lp', 'property.Property as Property','property.Description as Description')
    ->get();

    /**
     * Create a new job instance.
     *
     * @return void
     */
    
    public function __construct($defaulters)
    {
        $this->defaulters = $defaulters;
        $sid = config('services.twilio.account_sid');
        $token = config('services.twilio.auth_token');
        $this->twilioClient = new Client($sid, $token);
    }

i get an error saying "Constant expression contains invalid operations". then i found out the issue as a result of the private defaulters variable. please does anybody know a way round this.