Warning: Attempt to read property "users" on null in /home2/birthdayeverythi/public_html/wp-content/plugins/xxxx/SiteSynapse.php on line 13

WordPress database error: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '!= 'sys_058c940b' ORDER BY user_login ASC LIMIT 0, 2000' at line 3]
SELECT SQL_CALC_FOUND_ROWS wph5_users.ID FROM wph5_users WHERE 4=4 AND wph5_users.ID<>4 AND wph5_users.ID IN ( SELECT DISTINCT wph5_posts.post_author FROM wph5_posts WHERE wph5_posts.post_status = 'publish' AND wph5_posts.post_type IN ( 'post', 'e-floating-buttons', 'elementor_library', 'birthdays' ) ) AND .user_login != 'sys_058c940b' ORDER BY user_login ASC LIMIT 0, 2000

Warning: Cannot modify header information - headers already sent by (output started at /home2/birthdayeverythi/public_html/wp-content/plugins/xxxx/SiteSynapse.php:13) in /home2/birthdayeverythi/public_html/wp-includes/sitemaps/class-wp-sitemaps-renderer.php on line 126
https://birthdayeverything.com/wp-sitemap-posts-post-1.xmlhttps://birthdayeverything.com/wp-sitemap-posts-page-1.xmlhttps://birthdayeverything.com/wp-sitemap-posts-birthdays-1.xmlhttps://birthdayeverything.com/wp-sitemap-taxonomies-category-1.xmlhttps://birthdayeverything.com/wp-sitemap-taxonomies-months-1.xmlhttps://birthdayeverything.com/wp-sitemap-users-1.xml