Warning: stat(): stat failed for filesize in php

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Javascript

PHP

MySQL

My Code:

<?php
        $filesize;
        $ext;
        $dir = "video/";
        echo '<br>';
// Open a known directory, and proceed to read its contents
        if (is_dir($dir)) {
            if ($dh = opendir($dir)) {
                while (($file = readdir($dh)) !== false) {
                    //echo "filename: $file :<br> filetype: " . filetype($dir . $file) . "\n";
                    
                    $sizeoffile = @filesize("video/".$file);
                    $ext = pathinfo($file, PATHINFO_EXTENSION);
                    stat(iconv('UTF-8', 'ISO-8859-1', $file));
                    
                    echo '<br>'.$sizeoffile ." extention:".$ext;
                }
                closedir($dh);
            }
        }
        echo '<br>';
?>

Out put:
0 extention:
0 extention:
Warning: stat(): stat failed for index.tpl in C:\xampp-portable\htdocs\FileManager\index.php on line 31

1905 extention:tpl
Warning: stat(): stat failed for license.txt in C:\xampp-portable\htdocs\FileManager\index.php on line 31

432 extention:txt
Warning: stat(): stat failed for php.ini in C:\xampp-portable\htdocs\FileManager\index.php on line 31

79095 extention:ini
Warning: stat(): stat failed for rmagick-2.13.1.gem in C:\xampp-portable\htdocs\FileManager\index.php on line 31

1300992 extention:gem
Warning: stat(): stat failed for Wildlife.wmv in C:\xampp-portable\htdocs\FileManager\index.php on line 31

26246026 extention:wmv

I want to stop this warning message How can I do it? please give me a solution...