获取“(#100)页面公共内容访问权需要应用程序秘密证明或应用程序令牌". Facebook API调用时出现问题?

我正在开发一个与用户Facebook帐户同步并获取Facebook页面信息的应用程序.最初，应用程序要求登录Facebook并获取页面列表.获取页面后，我将调用API以获取与每个页面相关的帖子.获得帖子详细信息后，我将调用洞察API，以获取每个帖子的见解. 此流程在开发模式下可以正常工作，但是当我切换到实时模式时，出现以下错误

I am developing an app that syncs with users Facebook account and fetches Facebook page information. Initially, app asks for Login with Facebook and gets page list. After getting pages I am calling API to get posts associated with each page. Once I get post details then I am calling insight APIs to get insights of each post. This flow working fine with development mode but when I switch to Live mode I am getting the following error

      Client error: `GET https://graph.facebook.com/v4.0/100575944711552/feed` resulted in a `400 Bad Request` response:{"error":{"message":"(#100) Pages Public Content Access requires either app secret proof or an app token","type":"OAuthE (truncated...)
 {"userId":1,"email":"superuser@corals.io","exception":"[object] (GuzzleHttp\\Exception\\ClientException(code: 400): Client error: `GET https://graph.facebook.com/v4.0/100575944711552/feed` resulted in a `400 Bad Request` response:
{\"error\":{\"message\":\"(#100) Pages Public Content Access requires either app secret proof or an app token\",\"type\":\"OAuthE (truncated...)

从细节上我观察到我在使用时遇到此错误，

From the details what I observed I am getting this error while using,

GET /v5.0/{page-id}/feed HTTP/1.1
Host: graph.facebook.com

此端点.我目前有2个许可已批准，

this endpoint. I am currently having 2 permissions approved,

1. 管理页面2. read_insights 应用审查小组拒绝了2个权限，称该请求无效，在本用例中，我们不要求这样做， 1.页面提及2. user_posts

1. manage_pages 2. read_insights and app review team rejected 2 permissions saying the request is invalid and for this use case we don't require this which are, 1.Page Mentions 2. user_posts

任何人都可以帮助我了解确切的问题吗?

Can anyone help me to understand what is the exact issue?