Warning: Undefined array key "uid" in /mnt/web422/b3/92/521692/htdocs/showfox/php/filedialog.php on line 4

<div id="setlist">

Fatal error: Uncaught TypeError: mysqli_fetch_array(): Argument #1 ($result) must be of type mysqli_result, bool given in /mnt/web422/b3/92/521692/htdocs/showfox/php/filedialog.php:13
Stack trace:
#0 /mnt/web422/b3/92/521692/htdocs/showfox/php/filedialog.php(13): mysqli_fetch_array()
#1 {main}
  thrown in /mnt/web422/b3/92/521692/htdocs/showfox/php/filedialog.php on line 13