Schema is not displayed even if you enter the URL from "import" in "Add actions"

Schema is not displayed even if you enter the URL from “import” in “Add actions”
I’m copying and pasting from the site below, so I don’t think there are any mistakes in the Zapier’s URL.

ttps://actions.zapier.com/docs/platform/gpt

The schema is not displayed when I click the import button. Are there any settings or environments that are affecting this?
If anyone knows, please let me know.