$targetWebPFile

Hello,
In my plugin version on my website I have a difference with the plugin version on www.ads-software.com :
wp-content/plugins/shortpixel-image-optimiser/shortpixel_api.php

on line 712 i have this :
copy($targetWebPFile,$targetWebPFile);

the plugin on www.ads-software.com (line 712):
copy($tempWebpFilePATH, $targetWebPFile);

my plugin version is 4.13.1

Worfence the premium security plugin notify that the file has been modified maybe by an attacker.

I don’t see anything in my logs

Can you please tell me if it’s normal or not ?

Thank you