Graphql error when deploy to production

https://api.domain.com/api/reviews is okay. but graphql api.domain.com/graphql is show error.
{
“data”: null,
“error”: {
“status”: 404,
“name”: “NotFoundError”,
“message”: “Not Found”,
“details”: {}
}
}
i have set permission rules for it.
Where can we get log of this error?