Warning: file_get_contents(http://app.prokonsumencki.pl/api/external/certificates/?id=2810): failed to open stream: HTTP request failed! HTTP/1.1 500 Internal Server Error
 in /usr/home/netlibre/domains/download.prokonsumencki.pl/public_html/lib/tcpdf/examples/example_001.php on line 87
<strong>TCPDF ERROR: </strong>Some data has already been output, can't send PDF file