Hardly enough information to help you, but seems like you’ve overridden something that should not be overridden…
Fatal error: Cannot call overloaded function for non-object in /home/host/public_html/site/wp-content/plugins/google-analytics-for-wordpress/frontend/abstract-class-tracking.php on line 286
Not asking for help, just informing people that may be upgrading.
Pluggable functions are a core feature…kinda like filters before filters existed.
http://codex.wordpress.org/Pluggable_Functions
The specific function:
http://codex.wordpress.org/Function_Reference/wp_new_user_notification
Tested on two sites, and removing 5.2.8 allowed me to use the pluggable function again.
Good find moshiurmix, that might be where the problem lies.
On line 283 in abstract-class-tracking.php, Yoast requires the WordPress pluggable functions file:
require_once( ABSPATH . 'wp-includes/pluggable.php' );
I believe this removes them from being pluggable functions, breaking the WordPress feature.
——Edit—–
OK I just went to github to make note of it, and daveagp already has.
https://github.com/Yoast/google-analytics-for-wordpress/issues/271