Unable to parse incoming Flexible content, data should be an array Error

[bluestar0505]

I want to save all images to one json column(custom_images),
But the following error is occurring.

Unable to parse incoming Flexible content, data should be an array. at /var/www/vhosts/4kvin.com/httpdocs/vendor/whitecube/nova-flexible-content/src/Flexible.php:409)

Car.php

public function image(): HasOne
{
　return $this->hasOne(Image::class)->latestOfMany();
}

Image.php

protected $casts = [
　'custom_images' => 'array',
 ];

public function car(): BelongsTo
{
　return $this->belongsTo(Car::class);
 }

CarResource.php

 public function fields(NovaRequest $request)
 {

　return [
            ID::make()->sortable(),
            HasOne::make('Images', 'image', ImageResource::class),
　 ];
 }

ImageResource.php

public function fields(NovaRequest $request)
  {
　 return [
              Flexible::make('Images', 'custom_images')
                ->addLayout('Image', 'image', [
                    ImageField::make('Image')
                        ->disk('custom_images') 
                        ->rules( 'image', 'max:2048')
                        ->thumbnail(function ($value, $disk) {
                            return $value
                                ? Storage::disk($disk)->url($value)
                                : null;
                        })
                ])->button('Add Image'),

        ];
}

Laravel 10.10
Nova 4.35
nova-flexible-content 1.1.1