HTTP/1.1 200 OK Date: Wed, 14 Apr 2021 10:26:44 GMT Server: Apache/2.4.23 (Win32) OpenSSL/1.0.2j PHP/5.4.45 Last-Modified: Fri, 08 Nov 2019 01:46:28 GMT ETag: "0-596cbf34df6dc" Accept-Ranges: bytes Content-Length: 0 Content-Type: application/pdf