title: Error: Access Denied, on the main page, can see other pages sharepoint online
body: <p>Error: Access Denied, on the main page, can see other pages, 
  Current User 
  You are currently signed in as:  amark@microsoft.com
  Sign in as a different user
   SharePoint online
  funny can see the subsite but not the main page, please anyone has an idea?</p>