How to convert an image to WEBP mime type in CI?

Hi all! may someone help me with this issue, please!!

PHP Code:

public function createFile()
    {
   $file = $this->request->getFile('image');

 

 \Config\Services::image()->withFile($file)
 ->convert(IMAGETYPE_WEBP)//it does not convert to real WEBP instead jpeg WHY?
 ->fit(300, 300, 'center')
 ->save(FCPATH .'/image/'.$saveFile->store());

            $data=[
   'image'=> $saveFile
 ]; 
 
$model->save($data);
 } 


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