$fillable 不得在 Laravel 中定义（如类 Illuminate\\Database\\Eloquent\\Model）

Question

I have following laravel model. When I try to visit the site it shows the following error.

Symfony\\Component\\ErrorHandler\\Error\\FatalError Type of App\\Models\\Setting::$fillable must not be defined (as in class Illuminate\\Database\\Eloquent\\Model)

Environment information

Laravel version: 8.60.0

PHP version: 7.4.16

<?php
        namespace App\Models;
        
        use Illuminate\Database\Eloquent\Factories\HasFactory;
        use Illuminate\Database\Eloquent\Model;
        
        class Setting extends Model
        {
            use HasFactory;
        
            protected array $fillable = [
                'key',
                'value',
            ];
        
            protected $casts = [
                'value' => 'array',
            ];
        }

Answer 1

The error message is telling you that the ... " Type of App\\Models\\Setting::$fillable must not be defined ". So change:

protected array $fillable = [
                'key',
                'value',
            ];

to

protected $fillable = [
                'key',
                'value',
            ];

where its type is not defined.

Mass Assignment

Answer 2

I encounter the same problem, on local, it ask for array and on live, it asks not to put it there. Same environments on both machines.