Laravel Dropzone.js some photos cannot be saved into the folder - laravel

Question

I am using dropzone.js to allow the users to upload multiple photos to the database. Before I set up the database for the image uploader feature, I wanted to see if the image can be saved into my desired folder. However, after successfully uploading 3 photos(since the tick logo was shown right after the image was uploaded, I assumed the image has been successfully uploaded), only 2 of them were present in the folder.
In the following codes I have listed the view(including javascript and html codes), route and controller file:
CSS ->
{{html::style('https://cdnjs.cloudflare.com/ajax/libs/dropzone/5.1.1/min/dropzone.min.css')}}
HTML ->
{!! Form::open(array('route' => 'gallery.images.upload', 'class' => 'dropzone', 'enctype' => 'multipart/form-data','files' => true, 'id' => 'addImages', 'method' => "POST")) !!}
{{ Form::hidden('gallery_id', $gallery->id) }}
{!! Form::close() !!}
Javascript ->
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/dropzone/5.1.1/min/dropzone.min.js"></script>
<script type="text/javascript">
Dropzone.options.addImages = {
maxFilesize: 5,
acceptedFiles: 'image/jpeg,image/png,image/gif',
paramName: "file",
}
</script>
Route ->
Route::prefix('gallery')->group(function(){
Route::post('/images/upload', 'GalleryController#uploadGalleryImages')->name('gallery.images.upload');
});
Controller ->
public function uploadGalleryImages(Request $request)
{
if ($request->hasFile('file')) {
// Get the file from the file request
$file = $request->file('file');
// set my file name
$originalName = $file->getClientOriginalName();
$filename = uniqid() . $originalName;
$file->move('galleries/images/', $filename);
}
else{
return redirect()->route('gallery.view');
}
}
I have been asking around for several weeks but couldn't get any answer. I really need your help!
Screenshot of images being successfully uploaded
Screenshot of images present in the folder

Answer 1

This happened to me once because the server when going through the images it overwrites some images because they get the same filename, to avoid this use something like this to make sure you have unique filenames:
$random = mt_rand(1,1000);
$filename = time().''.$random. '.' . $file->getClientOriginalExtension();