大佬幫忙看看我這里哪里出錯了？

學(xué)習(xí)laravel的passport，跟著文檔的例子做的，走到 將授權(quán)碼轉(zhuǎn)化為訪問令牌 這一步報錯了，說請求缺少一個必須的參數(shù)，包含了一個無效的參數(shù)，可我看了半天沒看出來是哪里戳錯，求大佬指導(dǎo)一下！

報錯信息：

我的web路由部分代碼：

Route::get('/auth/callback', function (\Illuminate\Http\Request $request) {
    $client = new GuzzleHttp\Client;
    $response = $client->post('http://api.test/oauth/token', [
        'form_params' => [
            'grant_type' => 'authorization_code',
            'client_id' => 3,
            'client_secret' => 'AMCVpFBHFuVa5VPF3MQfcerdsnn3W9hMwmW0Xjxh',
            'redirect_url' => 'http://api.test/auth/callback',
            'code' => $request->input('code'),
        ],
    ]);

    return json_decode((string)$response->getBody(),true);
});

進(jìn)入這個路由的完整地址：

http://api.test/auth/callback?code=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