=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Server: nginx/1.14.2
Date: Sat, 04 Dec 2021 08:18:53 GMT
Content-Type: text/html
Content-Length: 185
Connection: close
Location: https://chartgizmo.com/GenerateChart?id=1946

HTTP/1.1 200 
Server: nginx/1.14.2
Date: Sat, 04 Dec 2021 08:18:55 GMT
Content-Type: image/png
Connection: close
Cache-Control: no-cache
Pragma: no-cache
Expires: Thu, 01 Jan 1970 00:00:00 GMT

Request headers
================
HEAD /GenerateChart?id=1946 HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: chartgizmo.com
Accept: */*
Referer: http://web-marketing.zako.org
Connection: close


Link is valid.