PHP Notice: tempnam(): file created

CSC 4.18.3 PHP 8.2

This PHP notice occurs when using the Advance Product Import that retrieves a file from a remote location via ftp link. The process takes around 2 hours to complete (updates pricing and inventory) and throws the notice a few times during the process. I assume it’s retrieving the file and temporarily storing it but I am confused as to why it would a few times during the process. I have seen temporary files come and go in /var/files/1/exim/backup/images/ but the notice seems to suggest that it needs a more direct path.?

[06-May-2025 08:19:20 America/Chicago] PHP Notice:  tempnam(): file created in the system's temporary directory in /home/user/domains/example.com/public_html/app/functions/fn.fs.php on line 1163
[06-May-2025 10:41:31 America/Chicago] PHP Notice:  tempnam(): file created in the system's temporary directory in /home/user/domains/example.com/public_html/app/functions/fn.fs.php on line 1163
[06-May-2025 10:47:47 America/Chicago] PHP Notice:  tempnam(): file created in the system's temporary directory in /home/user/domains/example.com/public_html/app/functions/fn.fs.php on line 1163
[06-May-2025 11:05:29 America/Chicago] PHP Notice:  tempnam(): file created in the system's temporary directory in /home/user/domains/example.com/public_html/app/functions/fn.fs.php on line 1163