nexusphp/app/Models/NexusModel.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class NexusModel extends Model
{
    use HasFactory;

    public $timestamps = false;

    /**
     *
     * @param  \DateTimeInterface  $date
     * @return string
     */
    protected function serializeDate(\DateTimeInterface $date)
    {
        return $date->format($this->dateFormat ?: 'Y-m-d H:i:s');
    }

}