Drive client reports too many errors

1. Install Nuxeo 7.10 (fully patched)
2. Install Drive 2.4.3
3. Server-User1: Create folder "MEFolder"
4. Client-User1: Start Drive Client and wait for sync completion
5. Client-User1: Create folder "test01", "test02", "test03" and "test04" and wait for sync completion
6. Client-User1: Copy paste the attached 250 files into each folder (250*4 folders)
7. Client-User1: Rename the folder "MEFolder" to "MEFolder_Renamed" and wait for sync completion

After sync is completed, we can able to see NO_PARENT "Errors" Drive client menu

No of “NO_PARENT” error observed ranges from 300 to 800 for 1000 files upload.

Even after clicking on retry error is not resolved