isabok

He commented out these particular lines of code. I so i suggest you do the same. Just open wpdm-archive-page.php and comment out the following the lines of code as shown below!
/*
if(!function_exists(‘array_map_recursive’)) {
function array_map_recursive($callback, $value){
if (is_array($value)) {
return array_map(function($value) use ($callback) { return array_map_recursive($callback, $value); }, $value);
}
return $callback($value);
}
} */

Hope it will be helpful.