Laravel:Mediable Duplication error SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry

I am trying to use $media->onDuplicateReplace(); in code:

public function update($id){

        $user = User::find($id);
        $user->name=request('name');
        $user->email=request('email');
        $user->password=request('password');
        $user->description=request('description');
        $user->country_id=request('country');
        $user->state_id=request('state');
        $user->city_id=request('city');
        $user->works_at=request('works_at');
        $user->studies_at=request('studies_at');


        $uid = $id;
        $img = Image::make(request('file'));

        $img->resize(800, null, function ($constraint) {
            $constraint->aspectRatio();
        });

        $img->crop(800,800);
        $img->save('uploads/users/images/'.$uid.'.jpg');

        $media = MediaUploader::import('uploads', 'users/images', $uid, 'jpg');
        $media->onDuplicateReplace();
        $user->attachMedia($media, 'image');

        $user->update();
        return redirect('/');
    }

but i dont work for me, keeping sending the error

SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry 'uploads-users/images-1-jpg' for key 'media_disk_directory_filename_extension_unique' (SQL: insert into media (disk, directory, filename, extension, mime_type, aggregate_type, size, updated_at, created_at) values (uploads, users/images, 1, jpg, image/jpeg, image, 49344, 2017-12-24 10:10:07, 2017-12-24 10:10:07))

this thing dont work too ->

'on_duplicate' => Plank\Mediable\MediaUploader::ON_DUPLICATE_REPLACE,

How can i just make media to replace the file if it already exist?

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