It extension is work on the dedicated linux server?

[saleemkhan25]

I am little confuse how to pass the pdf file path. Because i added the path but not running any function on the server.
$html = $pdf->getInfo();
All of the function showing empty data.

But when i hit the "$page = $pdf->html();" function then facing following issue:
"Exception
You're asking to go to page 1 but max page of this document is 0",

If anyone let me know how to fix the following issue?
Thanks in advance.