Number type returning Undefined array key 1

[emabusi2]

I have the below CRUD Controller for AccountTransaction model but I keep getting the error "Undefined array key 1" on the list page, a preliminary debuging revealed its because of the balance and amount column i.e when I remove those column from displat that error does not appear.
The error as per debug bar
Undefined array key 1 (View: C:\xampp\htdocs\mintfinance\vendor\backpack\crud\src\resources\views\crud\columns\number.blade.php)vendor/laravel/framework/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php#760

The CRUD Controller
`<?php

namespace App\Http\Controllers\Admin;

use App\Http\Requests\AccountTransactionRequest;
use Backpack\CRUD\app\Http\Controllers\CrudController;
use Backpack\CRUD\app\Library\CrudPanel\CrudPanelFacade as CRUD;

/**

• Class AccountTransactionCrudController

• @Package App\Http\Controllers\Admin

• @property-read \Backpack\CRUD\app\Library\CrudPanel\CrudPanel $crud
  */
  class AccountTransactionCrudController extends CrudController
  {
  use \Backpack\CRUD\app\Http\Controllers\Operations\ListOperation;
  use \Backpack\CRUD\app\Http\Controllers\Operations\CreateOperation;
  use \Backpack\CRUD\app\Http\Controllers\Operations\UpdateOperation;
  use \Backpack\CRUD\app\Http\Controllers\Operations\DeleteOperation;
  use \Backpack\CRUD\app\Http\Controllers\Operations\ShowOperation;

  /**

  • Configure the CrudPanel object. Apply settings to all operations.
  • @return void
    */
    public function setup()
    {
    CRUD::setModel(\App\Models\AccountTransaction::class);
    CRUD::setRoute(config('backpack.base.route_prefix') . '/account-transaction');
    CRUD::setEntityNameStrings('account transaction', 'account transactions');
    }

  /**

  • Define what happens when the List operation is loaded.

  • @see https://backpackforlaravel.com/docs/crud-operation-list-entries

  • @return void
    */
    protected function setupListOperation()
    {
    CRUD::setFromDb(); // set columns from db columns.

    /**

    • Columns can be defined using the fluent syntax:
    • • CRUD::column('price')->type('number');
        */
        CRUD::column('account')->type('relationship');
        CRUD::column('type')->type('enum');
        CRUD::column('description');
        CRUD::column('balance')->type('number')->key('balance');
        CRUD::column('amount')->type('number')->key('amount');

  }

  /**

  • Define what happens when the Create operation is loaded.

  • @see https://backpackforlaravel.com/docs/crud-operation-create

  • @return void
    */
    protected function setupCreateOperation()
    {
    CRUD::setValidation(AccountTransactionRequest::class);
    CRUD::setFromDb(); // set fields from db columns.

    /**

    • Fields can be defined using the fluent syntax:
    • • CRUD::field('price')->type('number');
        */

  }

  /**

  • Define what happens when the Update operation is loaded.
  • @see https://backpackforlaravel.com/docs/crud-operation-update
  • @return void
    */
    protected function setupUpdateOperation()
    {
    $this->setupCreateOperation();
    }
    }
    `

The Model
`<?php

namespace App\Models;

use Backpack\CRUD\app\Models\Traits\CrudTrait;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class AccountTransaction extends Model
{
use CrudTrait;
use HasFactory;

/**
 * The attributes that are mass assignable.
 *
 * @var array
 */
protected $fillable = [
    'account_id',
    'type',
    'description',
    'amount',
    'balance',
];

/**
 * The attributes that should be cast to native types.
 *
 * @var array
 */
protected $casts = [
    'id' => 'integer',
    'account_id' => 'integer',
    'amount' => 'decimal',
    'balance' => 'decimal',
];

public function account(): BelongsTo
{
    return $this->belongsTo(Account::class,'account_id','id');
}

}
`

The Migrations file
`<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

return new class extends Migration
{
/**
* Run the migrations.
*/
public function up(): void
{
Schema::create('account_transactions', function (Blueprint $table) {
$table->id();
$table->unsignedBigInteger('account_id');
$table->foreign('account_id')->references('id')
->on('accounts')
->onDelete('cascade')
->onUpdate('cascade');
$table->enum('type', ["in","out"]);
$table->string('description')->nullable();
$table->unsignedDecimal('amount',14,4);
$table->unsignedDecimal('balance',14,4);
$table->timestamps();
});
}

/**
 * Reverse the migrations.
 */
public function down(): void
{
    Schema::dropIfExists('account_transactions');
}

};
`

[emabusi2]

The model cast.

protected $casts = [
'id' => 'integer',
'account_id' => 'integer',
'amount' => 'decimal:4',
'balance' => 'decimal:4',
];