"Duplicate object found in source - ignoring"

[loop (Luke Taylor)]

What is the problem you are having with rclone?

I run a copy command and get some odd error messages

/usr/bin/rclone copy /home/luke onedrivebackup: --update --include-from "/home/luke/backup.list" --skip-links
2020/12/04 12:04:52 NOTICE: projects/PROJECT1/src/aios_config/model/truck.dae: Duplicate object found in source - ignoring
2020/12/04 12:04:55 NOTICE: projects/PROJECT2/src/common/src/aios_config/model/truck.dae: Duplicate object found in source - ignoring
2020/12/04 12:04:56 NOTICE: projects/PROJECT3/src/common/src/aios_config/model/truck.dae: Duplicate object found in source - ignoring

What is your rclone version (output from rclone version)

rclone v1.53.3

• os/arch: linux/amd64
• go version: go1.15.5

Which OS you are using and how many bits (eg Windows 7, 64 bit)

Ubuntu 18.04 64-bit (ext4 filesystem)

Which cloud storage system are you using? (eg Google Drive)

MS Onedrive

The rclone config contents with secrets removed.

{
    "onedrivebackup": {
        "drive_id": "b!5PMyISWqbUyso_ye69EJdBXJdB7MqUBClPiaB1zYntiNtY3ID6ZvSYk-c3NIC3sb",
        "drive_type": "business",
        "token": ____
        "type": "onedrive"
    }

A log from the command with the -vv flag

[asdffdsa (jojothehumanmonkey)]

hello and welcome to the forum,

you might have duplicates in the source, same file name but using different capitalization.
one drive is case insenstive,

for example,
File and file

https://rclone.org/overview/