Amelia Hangs

Hi

Ameila will not load and just hangs.

I’m getting the following error using the console:

https://www.xxx.com/wp-admin/admin-ajax.php?action=wpamelia_api&call=/entities&page=appointments&types%5B%5D=categories&types%5B%5D=employees&types%5B%5D=locations&types%5B%5D=notifications&types%5B%5D=custom_fields

[HTTP/2 500 Internal Server Error 1774ms]

I checked the server logs and there is no mention of any errors

I also tried using the default 2020 theme and disabling all other plug-ins.

The plug-in does not have any update notices and is running version Version 1.4.2

Site is running the latest version of WordPress and PHP 7.4. I tried changing to 7.3 and made no difference