Unlink no such file or directory

Looking on my error log I got a lot of this:

[26-Feb-2018 10:46:22 UTC] Array
(
    [error] => Warning
    [file] => /home/tksjdntw/domain/wp-content/plugins/w3-total-cache/lib/Minify/Minify/Cache/File.php
    [line] => 55
    [path] => /home/tksjdntw/domain/wp-content/cache/minify/b1e1d.js
    [flag] => 
    [debug] => 
    [filter] => init
    [message] => Warning (2): unlink(/home/tksjdntw/domain/wp-content/cache/minify/b1e1d.js_old): No such file or directory
    [url] => https://domain/wp-content/cache/minify/b1e1d.js
)

I fixed editing line 54 with:

if( file_exists($path . '_old') ) {
            @unlink($path . '_old');
		}
        if( file_exists($path . '_meta_old') ) {
            @unlink($path . '_meta_old');
        }

Use @ but this with specific configuration show the alert in any cases.