Tags of anime favorite cause internal error

[constraintAutomaton]

Hi, I tried doing a query to get the tags of the favorite anime of a user, but I throw an internal error. If I'm requesting others Infos about the favorites like less say the titles everything works fine. If I'm doing a search for anime and requesting the tags, it also works. I join below the query and the error.

 query UserInfo($user: String) {
   User(name: $user) {
     favourites {
       anime {
         edges {
           node {
             tags{
               description
            }
           }
        }
       }
     }
   }
 }

and I'm getting

{
  "errors": [
    {
      "message": "Internal Server Error",
      "status": 500
    },
    {
      "message": "Internal Server Error",
      "status": 500
    },
    {
      "message": "Internal Server Error",
      "status": 500
    },
    {
      "message": "Internal Server Error",
      "status": 500
    },
    {
      "message": "Internal Server Error",
      "status": 500
    },
    {
      "message": "Internal Server Error",
      "status": 500
    },
    {
      "message": "Internal Server Error",
      "status": 500
    }
  ],
  "data": {
    "User": null
  }
}