Error with updating display name

Hello Dale!

I have a form that updates the users display name in wordpress. For some reason, your plugin doesn’t like it. The code looks like this

//update user display name
if(!empty($display_name)){
$userData = wp_update_user( array( ‘ID’ => $userID, ‘display_name’ => $display_name ) );
}

Pretty straight forward – the name updates, but this is the error code I get repeated until the server overloads:

Undefined index: wp_sync_post_types in /var/www/html/wp-content/plugins/integrate-firebase-PRO/includes/service/class.firebase-service.php on line 189

ends with this:
Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 266240 bytes) in /var/www/html/wp-includes/wp-db.php on line 2023