[basex-talk] XPTY0004 error when calling http:send-request inside of a local function

[Bridger Dyson-Smith]

Hi all -

I'm accustomed to writing something like the following:

```xquery

declare function local:grab(
  $url as xs:string,
  $path as xs:string,
  $fname as xs:string
) as document-node() {
  let $req := http:send-request(<http:request method="get"/>, $url)
  return
    if (head($req)/@status = "200")
    then file:write($path || $fname, tail($req), map { "method": "xml" })
    else ("something went wrong!")
};
```

but I've noticed that in version 9.4.3 this returns an  XPTY error:
Stopped at /home/bridger/bin/basex-src/basex-943-xpty0004-error.xq, 1/18:
[XPTY0004] Cannot promote xs:string* to document-node(): (let $req_7 :=
http:send-request(<http:request method="get"/>, "
https://dpla.lib.utk.edu/repox/OAIHa....

While this could be a bug, should I be writing this kind of local function
differently? Or could I improve my typing on it?

Thanks very much for any advice or insights you can provide.
Best,
Bridger