Why is there a logo when I click on a link?

Question

IIS

Clicking on the link will logout and double the url
Asp.net mvc 5
Source code:

<li><a href="@Url.Action("Index", "SchoolOss", new { @type_sc = 1 })"><span class="next">School</span></a></li>

The code in the browser looks like this:

<li><a href="/SchoolOss?type_sc =1"><span class="next">School</span></a></li>

When you click on the link, it logs in and returns the following url :

http://192.168.1.20:81/Login?returnUrl=http://192.168.1.20:81/SchoolOss/Index

Any of your advice would be helpful.
Thanks in advance!

Answer 1

Copy-paste, exactly the same question, the answer is like the question
itself