That is what I obtained from WP:
Since WordPress 5.2 there’s a built-in characteristic that detects when a plugin or theme causes a deadly error in your website, and notifies you with this automated electronic mail.
On this case, WordPress caught an error with one among your plugins, AMP.
First, go to your web site (https://Mysite.wpengine.com/) and verify for any seen points. Subsequent, go to the web page the place the error was caught (https://Mysite/wp-admin/admin-ajax.php) and verify for any seen points.
Please contact your host for help with investigating this situation additional.
In case your website seems damaged and you may’t entry your dashboard usually, WordPress now has a particular “recovery mode”. This allows you to safely login to your dashboard and examine additional.