PHP Laravel array null values after passing to method - php

Question

I have a DocumentsController and it stores files.
When I am uploading multiple files, they are uploaded to store method and after that I call a method that manage the path, filename.
So when I pass the data array as parameter to that method(manageFileName), this array somehow is changed, his values are null.
class DocumentsController
{
public function store(Request $request)
{
$file = $request->file('file');
$data = [
"extension" => $file->getClientOriginalExtension(),
"name" => pathinfo($file->getClientOriginalName())['filename'],
"folder" => $request->folder,
"visible" => "private",
"mime_type" => $file->getClientMimeType()
];
Logger($data);
/*
$data = [
"extension" => 'pdf',
"name" => 'pdf sample',
"folder" => 'folder',
"visible" => "private",
"mime_type" => 'application/pdf'
];
*/
$this->manageFileName($data);
// Upload file to S3...
}
public function manageFileName($data)
{
Logger($data);
/*
$data = [
"extension" => null, // why?
"name" => null, // why?
"folder" => 'folder',
"visible" => "private",
"mime_type" => 'application/pdf'
];
*/
}
}
The problem is that this behavior is not happening to all uploaded files, from 20 only 2 or 3 files are not uploaded properly.
I can't understand what is happening.
P.S. I am using Dropzone.js to upload files in Laravel
I am uploading 20 pdf files at a time(just the same file copied).
Laravel 5.8, Php 7.4
I checked php.ini configuration:
max_file_uploads = 30,
post_max_size = 50M,
post_max_size = 50M,
max_execution_time = 120