hello and welcome to the forum,
does the script run and fail?
or
does not run at all?
unless you are 1000% sure, should remove --allow-non-empty
there are a number of post about rclon in the forum, did they not solve the problem?
What am I missing in Crontab executing the .cron files?
Rclone works but not from cron (raspberry pi)
Issue with rclone running from cron