Issue in ppt to pdf conversion

[DeepanshuScala]

@ncjoes @liasica @zxp86021 @busgurlu
Hi,
There is an issue while creating ppt to pdf all my content is showing as attached can someone please assist me in this
16704978472022120811104724523_product_file1670580711.pdf
Here is my code
$converter = new OfficeConverter('/var/www/html/storage/app/public/uploads/products/2396.ppt');
try{
$r = $converter->convertTo('16704978472022120811104724523_product_file'.time().'.pdf');
}
catch(exception $e){

    }