Pawlox video thumbnail image is not being saved on my storage drive... PLEASE HELP

[sayamk3004]

public function postVideo(Request $request)
{
    $this->validate($request, [
        'topic_img' => 'required',
    ]);
    $video_name = "";
    if ($request->hasFile('topic_img')) {
        $destination = 'public/videos/';
        $storageUrl = 'public/images/';
        $video = $request->file('topic_img');
        $video_name = \Carbon\Carbon::now()->timestamp . '.' . $video->extension();
        $image_name = \Carbon\Carbon::now()->timestamp;
        $path = $request->file('topic_img')->storeAs($destination, $video_name);

        $thumbnail_path = storage_path('app/public/videos');
        $file = $request->file('topic_img');
        $thumbvideoPath  = storage_path('app/public/videos/') . $video_name;
        $video_path       = $destination . '/' . $video_name;
        $thumbnail_image  = $image_name . ".jpg";

        $thumbnail_status = VideoThumbnail::createThumbnail($thumbvideoPath, $thumbnail_path, $thumbnail_image, 10);

        //dd($thumbnail_status);
        if ($thumbnail_status) {
            print_r($thumbnail_status);
            echo "Thumbnail generated            ";
            Auth::user()->videos()->create([
                'description' => $request->input('description'),
                'title' => $video_name,
                'path' => $path,
            ]);
            return response()->json([
                'description' => $request->description
            ], 200);
        } else {
            echo "thumbnail generation has failed";
        }
    }
}

Pawlox\VideoThumbnail\VideoThumbnail Object ( [FFMpeg:protected] => [videoObject:protected] => [videoURL:protected] => C:\xampp\htdocs\watchum\storage\app/public/videos/1617575315.mp4 [storageURL:protected] => C:\xampp\htdocs\watchum\storage\app/public/videos [thumbName:protected] => 1617575315.jpg [fullFile:protected] => C:\xampp\htdocs\watchum\storage\app/public/videos/1617575315.jpg [height:protected] => 480 [width:protected] => 640 [screenShotTime:protected] => 10 ) Thumbnail generated