Have recently had issues with my site so I decided to upgrade. I've upgraded a few times over the years and had no problems that I haven't been able to sort out. Currently my site gives me error messages when I try to view it. This what I get
Warning: Invalid argument supplied for foreach() in /home/tombur2/public_html/wp-includes/query.php on line 684
Fatal error: Call to undefined function: update_object_term_cache() in /home/tombur2/public_html/wp-includes/post.php on line 2768
When I go to my login page I get the page but it's not styled so I gues it's not accessing a style sheet properly. When I enter my username/password I get this fatal error:
Fatal error: Call to undefined function: hash_hmac() in /home/tombur2/public_html/wp-includes/pluggable.php on line 1079
Anybody have ideas as to what I need to do?