Fatal error: Uncaught Error: Call to a member function fetch_array() on boolean in /Users/maciej/Code/iw/backend/db_connect.php:45 Stack trace: #0 /Users/maciej/Code/iw/backend/post.php(80): new_select_one('select id from ...', NULL) #1 /Users/maciej/Code/iw/backend/formatting.php(120): Post->prev() #2 /Users/maciej/Code/iw/site/post.php(35): print_next_prev_posts(Object(Post)) #3 {main} thrown in /Users/maciej/Code/iw/backend/db_connect.php on line 45