which worked, removing the trailing slash or updating rclone?
might check out
https://forum.rclone.org/t/automate-upload-complete-torrents-in-google-drive-using-qbitorrent/23471/8
if that does not solve the issue, then i would
--- kill the mount
--- restart the mount, using a debug log.
--- generate the error
--- kill the mount
--- post the full debug log