Problem with Backup-dir

i am doing backup of my unix data on microsoft onedrive via script using below command

rclone sync /unix/datapath remote:backup/weekly -l --backup-dir remote:backup/incremental/$(date +%Y-%m-%d) &

however i have below error message

ERROR : Fatal error received - not attempting retries
Failed to sync: Failed to make fs for --backup-dir “remote:backup/incremental/2019-02-28”: “2019-02-28”: is a not a regular file
ERROR : Fatal error received - not attempting retries

What i notice is that directory backup/incremental/2019-02-28 is created on microsoft one drive cloud. but no changed files are copied in this directory.

could you please let me know what could be issue.

rclone is confused as to whether “2019-02-28” that is a file or a directory

Can you try the latest beta to see if is does the same thing?