Exporting Appointment to Google Calendar Not Working

Hello!

When I click Export and Update Events to GCal Now the verification message stays as "Preparing for export, please hold on..." and does not update to a confirmation message of sorts.

In the console it gives me the error note: "Failed to load resource: the server responded with a status of 500 (Internal Server Error) - https://viriditasherbalproducts.com/wordpress/wp-admin/admin-ajax.php"

Any help would be much appreciated, thanks!