Caught Error: (wrong-type-argument integer-or-marker-p nil)

[map7]

In Emacs 30.1 when using org-ehtml I get the following error

Caught Error: (wrong-type-argument integer-or-marker-p nil)

How do I fix this, it works under Emacs 29.4 with the same config

Here is how I have it configured

(use-package web-server :ensure t)
(use-package org-ehtml
  :ensure t
  :config
  (setq org-ehtml-docroot (expand-file-name "~/org/business"))
  (setq org-ehtml-everything-editable t)
  (ws-start org-ehtml-handler 8888 nil :host "0.0.0.0"))