Dashboard down

So I’m not yet an expert with wordpress but I’m learning pretty quickly here. I currently have 5 sites up and running. Just a few minutes ago I updated one of my sites to the newest version of wordpress. Then I also updated a few of the plugins. After updating the “ready backup” plug in my dashboard vanished.. this is what it says when i try to log in to my dashboard:

Fatal error: Call to a member function getView() on a non-object in /home/content/42/10709742/html/eltequila/wp-content/plugins/ready-backup/modules/adminmenu/views/adminmenu.php on line 24

Please help me regain access here..