Help with copying s3 bucket to another location missing objects

Hello All, Today I was trying to copy a directory from one location to another, and was using the following command to execute my copy.

aws s3 s3://bucketname/directory/ s3://bucketname/directory/subdirectory --recursive

The copy took overnight to complete because it was 16.4TB in size, but when I got into work the next day, it was done, or at least it had completed.

But when I do a compare between the two locations I get the following

bucketname/directory/ 103,690 objects - 16.4TB

bucketname/directory/subdirectory/ 103,650 - 16.4TB

So there is a 40 object difference between the source location and the destination location.

I tried using the following command to copy over the files that were missing

aws s3 sync s3://bucketname/directory/ s3://bucket/directory/subdirectory/

which returned no results. It sat for a while maybe like 2 minutes or so, and then just returned to the next line.

I am at my wits end trying to copy of the missing objects, and my boss thinks that I lost the data, so I need to figure out a way to get the difference between the source and destination copied over.

If anyone could help me with this, I would REALY appreciate it. I am a newbie with AWS, so I may not understand everything that I am told, but I will try anything to get this resolved. I am doing all the commands through an EC2 instance that I am ssh into, and then use AWS CLI commands.

Thanks to anyone who might be able to help me.

Take care,

-Tired & Frustrated :)