error in process sentinel: Wrong type argument: number-or-marker-p, nil

I am trying to fetch the weather in emacs from , but I get the error shown in the title:

Here is the code to reproduce on my system (I also tested on my phone in termux and I get the same error)

```
#!/usr/bin/env -S emacs --script

(require 'plz)

(defvar weather-url "https://wttr.in/WV?format=3")

(let* ((plz-timeout 25)
(response (plz :get weather-url
:as 'buffer)))
(with-current-buffer response
(princ (buffer-string))))
```

I'm on emacs 30.2 and using plz v0.9.1