should not be this mistake?
your ability to pass less than 2m?
the current error is because the request method is incorrect, such as the definition of POST,. You use GET to request

main configurations that need to be changed
post_max_size, upload_max_filesize in php
client_max_body_size in nginx
need to be restarted after modification

agree with the statement above, and suspect that you posted the wrong message incorrectly. the METHOD, used by MethodNotAllowedHttpException to determine the request has nothing to do with the size of the uploaded file. The laravel source code is as follows

MethodNotAllowedHttpException

// file vendor/symfony/http-kernel/Exception/MethodNotAllowedHttpException.php 12-31
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\HttpKernel\Exception;

/**
 * @author Kris Wallsmith <kris@symfony.com>
 */
class MethodNotAllowedHttpException extends HttpException
{
    /**
     * @param array      $allow    An array of allowed methods
     * @param string     $message  The internal exception message
     * @param \Exception $previous The previous exception
     * @param int        $code     The internal exception code
     */
    public function __construct(array $allow, $message = null, \Exception $previous = null, $code = 0)
    {
        $headers = array('Allow' => strtoupper(implode(', ', $allow)));

        parent::__construct(405, $message, $previous, $headers, $code);
    }
}