API Error 500

I get an internal server error when running the following query:

query collectionProductPagination($handle: String!, $after: String, $filters: [ProductFilter!] = []) {
  collection(handle: $handle) {
    products(first: 250, after: $after, filters: $filters) {
      edges {
        cursor
      }
      pageInfo {
        hasNextPage
      }
    }
  }
}

With the following variables:

{
  "handle":"new-arrivals",
  "filters": [
    {"available":true}
  ]
}

This is the error I see:

Internal error. Looks like something went wrong on our end.
Request ID: 2e7a4887-c814-4a91-9f26-b4f57a25a570 (include this in support requests).

Here are some more request ids for failed requests:

2175a278-2b4c-4731-ba3c-388fa4813469
dc4d90a0-b70c-469e-88c4-6f22c69db5ae
73f228ed-633b-49e4-bec0-489c247b3595
2f49c088-9b46-499d-904c-222dcea0c823

These queries used to run just fine but have recently started breaking.

Am I doing something wrong here or is there a bug in the API?

Thanks,

Romeo