With the new WordPress 5.2 the BThemes causes a mistake!
Since WordPress 5.2 there is a built-in function that detects when a plugin or theme causes a fatal error on your website, and therefore notifies you with this automated email.
In this case, WordPress intercepted a bug in your theme "Betheme".
Please contact your hosting company for assistance in further investigation of this issue.
If your website seems to be flawed and you can not access your dashboard as usual, WordPress now has a special "recovery mode". That way, you can securely log in to your dashboard and do more research.
To protect your website, this link expires in 1 day. But do not worry: A new link will be sent to you by e-mail if the error recurs after the deadline.
An error of type E_COMPILE_ERROR was caused in line 58 of the file /mnt/web324/a1/05/521505/htdocs/wp-content/themes/dl-computer/functions.php. Error message: require_once (): Failed opening required '/mnt/web324/a1/05/521505/htdocs/wp-content/themes/dl-computer/functions/builder/class-mfn-builder.php' (include_path = '. / opt / RZphp56 / includes'