How do you resolve 'Could not upload assets' using Asset Server

I've recently installed Unity Asset Server on a Mac. I used this on Linux prior without problems.

After a few checkins I'm getting this error

Could not upload assets. There are assets on the server with the same path name as some of the assets you tried to upload.

preventing any further checkings. Any ideas? Unclear how '5 remote and 4 conflicting changes' can be occuring as I'm the only user.

Thanks

Michela

I assume this is on the iPhone Unity?

Go to the server view on the local project, and it will highlight the conflicts you must resolve with a black dot. From that view you can choose what to do.