File not recognized but another file in same folder is recognized

I am running Ubuntu 20.04 on a machine. There is a rc.local service that 
runs as follows:

#!/bin/bash
sudo -u ubuntu s3fs nameofs3bucket /home/ubuntu/folder1 -0 umask=000 -o 
allow_others url=<url.com>
sudo chown -R ubuntu:ubuntu /home/ubuntu/.unison
/usr/bin/unison -root /home/ubuntu/folder1 -root /home/ubuntu/folder2 
-batch -auto -prefer newer -repeat=watch

my permissions for the /usr/bin/ applications involved are rwxrwxrwx (the 
applications are unison, unison-fsmonitor, s3fs).

When I upload a file to s3 bucket the s3fs running in the background is 
able to mount the file to the folder1 without any problem with public 
permissions (rwxrwxrwx).

I uploaded 3 files to s3 bucket (temp1.txt, temp2.txt, temp3.txt) and I can 
see all their permissions when s3fs mounts them to folder1 are rwxrwxrwx 
(due to the umask=000 option). But in the log for unison I only see two of 
the 3 files and in the folder2 only 2 files get copied.

[BGN] Copying temp1.txt from /home/ubuntu/folder1 to /home/ubuntu/folder2
[END] Copying temp1.txt
[BGN] Copying temp3.txt from /home/ubuntu/folder1 to /home/ubuntu/folder2
[END] Copying temp3.txt
Unison 2.53.3 (ocaml 4.08.1) finished propagating changes at 16:17:21.22 on 
25 Aug 2023, 85.803 s

I am not sure why unison is missing syncing the third file?

Also, if I dont set the option for the permissions for the synced files in 
folder1 look like -rw-------. In this case unison doesnt sync any files to 
folder2. I also tried running unison and s3fs both as root in rc.local, but 
that didnt work either.

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