Installed "Snapshot" and now my site is crashed. PLEASE HELP!

I installed Snapshot and now I'm only getting this message & CANNOT access my wordpress site at all. HELP, PLEASE! Fatal error: Cannot redeclare Dropbox_autoload() (previously declared in /home/content/71/9765571/html/wp-content/plugins/wordpress-backup-to-dropbox/Dropbox_API/src/Dropbox/autoload.php:18) in /home/content/71/9765571/html/wp-content/plugins/snapshot/lib/destinations/dropbox/includes/Dropbox/autoload.php on line 26