Webhook creation "internal server error"

Hi, I keep getting this message when creating a webhook… 

{
  "data": {
    "createWebhook": null
  },
  "errors": [
    {
      "message": "Something went wrong",
      "locations": [
        {
          "line": 2,
          "column": 3
        }
      ],
      "path": [
        "createWebhook"
      ],
      "extensions": {
        "code": "INTERNAL_SERVER_ERROR",
        "correlation_id": "92dbc774abb9d1a7-MCI"
      }
    }
  ]
}

Here is the mutation… (my information changed for the means of this post)

mutation {
  createWebhook(
    input: {
      actions: ["card.move"],
      name: "Card moves to HLD my Test PFD",
      url: "https:myurl.com",
      pipe_id: "12345678",
      filters: "{to_phase_id: [87654321]}"
    }) {
    webhook {
      id
      filters
      url
      name
    }
  }
}
 

What is going on how do I fix this?