fatal error of type E_ERROR at line 126

WordPress versión 6.1.1
Tema activo: Jannah (versión 5.4.10)
Plugin actual: Sync Post With Other Site (versión 1.4.1)
PHP versión 8.0.26

An error of the type E_ERROR has occurred in line 126 of the file /mnt/web008/c3/02/57106802/htdocs/prozesa/wp-content/plugins/sync-post-with-other-site/includes/sps_sync.class .php. Error message: Uncaught Error: Cannot use object of type WP_Error as array in /mnt/web008/c3/02/57106802/htdocs/prozesa/wp-content/plugins/sync-post-with-other-site/includes/sps_sync.class.php:126
Stack trace:
#0 /mnt/web008/c3/02/57106802/htdocs/prozesa/wp-includes/class-wp-hook.php(308): SPS_Sync->sps_save_post()
#1 /mnt/web008/c3/02/57106802/htdocs/prozesa/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()
#2 /mnt/web008/c3/02/57106802/htdocs/prozesa/wp-includes/plugin.php(517): WP_Hook->do_action()
#3 /mnt/web008/c3/02/57106802/htdocs/prozesa/wp-includes/post.php(4717): do_action()
#4 /mnt/web008/c3/02/57106802/htdocs/prozesa/wp-includes/post.php(4819): wp_insert_post()
#5 /mnt/web008/c3/02/57106802/htdocs/prozesa/wp-admin/includes/post.php(426): wp_update_post()
#6 /mnt/web008/c3/02/57106802/htdocs/prozesa/wp-admin/post.php(227): edit_post()
#7 {main}
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