wordpress.com – This error 2 appears on the wordpress backend please, Help

This error 2 shows on the wordpress backend

1) Notice: Trying to get the property of non-object in /home/ry9jeif7ikhf/public_html/wp-includes/link-template.php on line 317

2) Notice: Trying to get the property of non-object in /home/ry9jeif7ikhf/public_html/wp-includes/link-template.php on line 331