Size uploaded to Amazon S3 is not as expected

I uploaded successfully files into amazon s3, but funnily the size of file is not as expected. I have file size around 1MB, but after uploaded I saw the file around 50-ish bytes. What did I do wrong? Here is the code I have done so far.

routes.php

<?php

use Illuminate\Support\Facades\Storage;
use App\Image;

use Illuminate\Http\Request;
use App\Http\Requests;

Route::get('/', function () {
    return view('welcome');
});

Route::post('upload', function(Request $request){
    $image = new Image;
    $image->id = $request->input('id');
    $files = $request->file('file');
    $destination_path = 'uploads/';
    $fileName = time().'-'.$files->getClientOriginalName();
    $fileSize = $request->file('file')->getClientSize();
    $files->move($destination_path,$fileName);
    $image->file = $destination_path . $fileName;
    $image->save();

    //Store into amazon aws
    $s3 = Storage::disk('s3');
       //if($s3->put($fileName,file_get_contents($request->file('file')),'public')){
    if($s3->put($fileName,$image->file,'public')){
        $file = Image::create([
            'fileName'  => $fileName,
            'fileSize'  => $fileSize,
            'filePath'  => env('S3_URL').$fileName,
            'type'      => 's3',
        ]); 
    }
    return "Done";
});

If I use if($s3->put($fileName,file_get_contents($request->file('file')),'public')){ then I will get ErrorException in routes.php line 39: file_get_contents(/tmp/php8Mj2hK): failed to open stream: No such file or directory It seems obvious that when I uses $image->file in the second parameter of put function will give the size of the link instead of size of the actual file. I still dont know how to get the actual file from the upload/ folder and send it to amazon s3. How to do it correctly? Thanks