Loing 404

Adding more details, Please below HTML response

<strong>We're sorry but kite doesn't work properly without JavaScript enabled.
Please enable it to continue.</strong>


!function(){var e=document,t=e.createElement("script");if(!("noModule"in t)&&"onbeforeload"in t)
{var n=!1;e.addEventListener("beforeload",function(e){if(e.target===t)n=!0;else if(!e.target.hasAttribute("nomodule")||!n)return;e.preventDefault()},!0),
t.type="module",t.src=".",e.head.appendChild(t),t.remove()}}();


I have enable my script in my browsers. also this was not problem before, Can you please help me to solve this issue

If I try to hit login URL with api_key then it shows redirect URL. and When the same link if I try to hit in C# code is not working. as a response, I am getting a login URL with sess_id and there my code is getting broken.
However, this behavior is from Friday, I am using same code for the last 8 months it works fine for me. Do I need to do something with Javascript enabled. I have checked all my browser having this is true.

@AlgoTrader007 Were you able to solve this issue in C#?? I am also getting the same error also when calling from postman too?