Warnings above header

I am getting the following errors above the header on my blog and it is preventing me from logging into the dashboard. I’m pretty inexperienced and am completely lost trying to find the problem and fix it myself.

Warning: include(wp-includes/class-wp-term-connect.php): failed to open stream: No such file or directory in /home/content/71/10222071/html/wp-config.php on line 91

Warning: include(): Failed opening ‘wp-includes/class-wp-term-connect.php’ for inclusion (include_path=’.:/usr/local/php5_6/lib/php’) in /home/content/71/10222071/html/wp-config.php on line 91

The page I need help with: [log in to see the link]