protected static $imageFields = [
        'image'=>[],
        'image300'=>[
            'width' => 300,
            'height' => 300,
            'crop' => true,
            'auto_upload' => true,
            'file_input' => 'image',
            'update_database'=> false
        ],
        'image600'=>[
            'width' => 600,
            'height' => 600,
            'crop' => true,
            'auto_upload' => true,
            'file_input' => 'image',
            'update_database'=> false
        ],
    ];
    protected function imageUploadFilePath($file) {
        return $this->id . '-image.jpg';
    }
    protected function image300UploadFilePath($file) {
        return $this->id . '-image-300.jpg';
    }
    protected function image600UploadFilePath($file) {
        return $this->id . '-image-600.jpg';
    }

{!!  $site->imageTag('image')  !!}  // ok
{!! $site->imageTag('image300')  !!}  // problem
{!! $site->imageTag('image600')  !!} // probem

{!!  $site->imageTag('image')  !!}  // ok
{!! $site->imageTag('image300')  !!}  // ok
{!! $site->imageTag('image600')  !!} // ok

{!!  $site->imageUrl('image')  !!} // ok
{!! $site->imageUrl('image300')  !!} // ok
{!! $site->imageUrl('image600')  !!} // ok

 'image300'=>[
            'width' => 300,
            'height' => 300,
            'crop' => true,
            'auto_upload' => true,
            'file_input' => 'image',
            'update_database'=> false,
            'before_save' => BlurFilter::class,
        ],