Fatal error: Call to a member function query() on a non-object in /home/nvcs_master/nvcs.org/updates/concrete5.4.2/concrete/models/user.php on line 195


Here is what my website is currently displaying. I've made no recent changes and simply found it this way upon trying to access the site today. Can anyone give me input as to how to solve this issue or what may of caused it? Any help would be greatly appreciated!

Thanks!