Snapshot Error Call to Function Log Message

Google Drive has been setup and authenticated as the destination for backups on this website. However, when I go to destinations - google drive - I get an error:

Fatal error: Call to a member function log_message() on a non-object in /home/content/50/7025550/html/zprojectpraywebsite/wp-content/plugins/snapshot/lib/destinations/google-drive/index.php on line 249

What does this mean?