Cannot query field

I’m following the docs example here.
There is no spelling error as per previous similar issue.
I created function:

CreateFunction({
  name: "function_names",
  body: Query(Lambda(["size", "afterCursor", "beforeCursor"],
    Map(
      Paginate(Functions()),
      Lambda("ref",
        Select("name", Get(Var("ref")))
      )
    )
  ))
})

and schema file:

type Query {
  sayHello: String! @resolver(name: "say_hello")
  functionNames: [String!] @resolver(name: "function_names", paginated: true)
}

with query:

{
  functionNames {
    data
  }
}

in PG I get:

{
  "data": null,
  "errors": [
    {
      "message": "Cannot query field 'functionNames' on type 'Query'. (line 2, column 3):\n  functionNames {\n  ^",
      "locations": [
        {
          "line": 2,
          "column": 3
        }
      ]
    }
  ]
}

Why is this?
What can I do to obtain the correct response:

{
  "data": {
    "functionNames": {
      "data": [
        "function_names",
        "say_hello"
        "submit_order"
      ]
    }
  }
}
?
Thanks ...

It works fine for me. Can you please retry?

@Jay-Fauna
Although I previously successfully uploaded the schema with functionNames defined I checked the ‘docs’ tab and could see it hadn’t registered. I re-uploaded the schema, checked it had registered and it then worked …