Upload file over 512Ko doesn't work with laravel +Wamp

When i try to upload a file over 512ko on my application, after submit my page charging indefinitly.

PHP info : max_file_uploads 20 20 upload_max_filesize 2M 2M post_max_size 8M 8M

I really not understand what i do bad.

Wamp 3.0.6 Laravel 5.4 Someone can help me?

via Chebli Mohamed