Administrators on a WordPress.com VIP site may at times see a notice indicating there are PHP errors or warnings that need to be fixed:
This notice appears when our system detects that the site in question (and the theme behind it) has generated over 100 errors and/or warnings in the PHP error logs associated with the site.
Administrators can view more information about the error/warning messages by visiting the VIP Dashboard and scrolling down to view the widget titled “PHP Errors and Warnings from the last 24h.” It might look something like this:
This widget was made available in January 2016.
PHP errors/warnings can be indicative of problems with theme functionality, security or performance and should be fixed to ensure everything on the site is working as expected. If you are not sure what to do about these messages, please check with your development team as they should be able to assist in resolving these items.
If you still have any questions, please open a support ticket.