can't seem to access my method.

I am trying to reach the below location from my browser. 
https://staging.dashboard.researchstudyo...nt_handler
when I type that URL into the address bar and press enter I just get blank screen. Is there something wrong with that path? I'd expect to get a 404 error.

proof that an old dog can learn new tricks

https://staging.dashboard.researchstudyonline.com/ returns a blank page.

Code:

HTTP/2 200 OK
server: nginx/1.14.0 (Ubuntu)
date: Thu, 21 Jul 2022 21:59:49 GMT
content-type: text/html; charset=UTF-8
content-length: 0
x-powered-by: PHP/7.4.27
expires: Thu, 19 Nov 1981 08:52:00 GMT
cache-control: no-store, no-cache, must-revalidate
pragma: no-cache
X-Firefox-Spdy: h2

ci-phpunit-test | CodeIgniter Testing Guide | CodeIgniter 3 to 4 Upgrade Helper

https://staging.dashboard.researchstudyonline.com/ returns a blank page.

Code:

HTTP/2 200 OK
server: nginx/1.14.0 (Ubuntu)
date: Thu, 21 Jul 2022 21:59:49 GMT
content-type: text/html; charset=UTF-8
content-length: 0
x-powered-by: PHP/7.4.27
expires: Thu, 19 Nov 1981 08:52:00 GMT
cache-control: no-store, no-cache, must-revalidate
pragma: no-cache
X-Firefox-Spdy: h2

proof that an old dog can learn new tricks

I get the same as @kenjis a blank page in Chrome.

What did you Try? What did you Get? What did you Expect?

Joined CodeIgniter Community 2009.  ( Skype: insitfx )

Thanks guys.

proof that an old dog can learn new tricks