Person page shortcode issue

One user has reported a couple of issues with the person shortcode.

There is an issue with the Gutenberg editor and this shortcode (there are many reports of similar issues with other plugins and themes online). If you see the error whereby you cannot publish the page due to a JSON error then the current method to overcome this is to download the Classic Editor plugin and create the page using this editor instead of Gutenberg. Once the page is published you can then deactivate the Classic Editor plugin.

The second issue is even if you have entered the shortcode correctly it displays a blank page. This can be for two reasons

1: individual id entered incorrectly, you must use the full id displayed by the hover including any leading or trailing letters
2: Shortcode qualifiers do not like ‘fancy’ double quotes revert to normal double quotes or switch to normal single quotes