How to Get Shell Script to Change File Permissions?

Question

I have a webpage where users can upload a file. After the upload, the webpage calls a shell script to move the uploaded file to another location. I'm certain the "mv" command is failing because of a permissions issue, but I'm uncertain how to overcome this.

First things first. My webpage runs on an Ubuntu 16.04 server and Apache2 2.4.41. When the user uploads a file, that file is saved on the server in directory /var/www/html/uploads:

me@myServer:/var/www/html/uploads$ ls -l
total 44
-rw-r--r-- 1 www-data www-data   761 Feb 21 15:38 UsersUploadedFile.txt
me@myServer:/var/www/html/uploads$

I notice that the file is owned by user www-data.

Once the file is uploaded, the webpage calls this shell script to move the file to another directory:

#!/bin/bash
echo "Attempting to move the uploaded file..."
{
        mv /var/www/html/uploads/UsersUploadedFile.txt  /home/me/UsersUploadedFile.txt
} || {
   echo "Gah, failed to move the file!"
}

When the file is uploaded, you see this on my webpage:

Attempting to move the uploaded file...
Gah, failed to move the file!

So the "mv" command is failing.

My first instinct was that this was a permissions issue. The file-to-be-moved is owned by user www-data, as I mentioned before. The shell script is too:

me@myServer:/var/www/html$ ls -l
total 36
-rwxr-xr-x 1 www-data www-data  593 Feb 21 15:53 moveTheFile.sh
me@myServer:/var/www/html$

But the directory where I want to file to be moved is owned by user me, and I can't change that for other scripting reasons.

What I guess I'd like to do is to is have the shell script change UsersUploadedFile.txt 's ownership to user me, and then move the file. But if I insert a chown command into the shell script, that command fails, too.

It looks like user www-data is running the apache2 service, therefore also running the shell script...? I'm not sure.

me@myServer:/var/www/html$ ps -ef | grep apache
root      14931      1  0 13:00 ?        00:00:00 /usr/sbin/apache2 -k start
www-data  14934  14931  0 13:00 ?        00:00:00 /usr/sbin/apache2 -k start
www-data  14935  14931  0 13:00 ?        00:00:00 /usr/sbin/apache2 -k start
www-data  14936  14931  0 13:00 ?        00:00:00 /usr/sbin/apache2 -k start
www-data  14937  14931  0 13:00 ?        00:00:00 /usr/sbin/apache2 -k start
www-data  14938  14931  0 13:00 ?        00:00:00 /usr/sbin/apache2 -k start
www-data  14942  14931  0 13:00 ?        00:00:00 /usr/sbin/apache2 -k start
ph9821    15165  14831  0 16:03 pts/2    00:00:00 grep --color=auto apache
me@myServer:/var/www/html$

So what might I be doing wrong here? And how can I get the shell script to change file permissions? I guess that's what I really need done here. Thank you.