vuefilemanager/config/vuefilemanager.php

<?php

return [

    'version'    => '2.0',

    'is_demo' => env('APP_DEMO', false),

    // Define size of chunk uploaded by MB.
    // E.g. integer 128 means chunk size will be 128MB.
    'chunk_size' => env('CHUNK_SIZE', '128'),
];