Why getting unicode issue on the page

Can you anyone explain me, why i am getting this error.

1) Add the unicode in the web.config

<system.web>
<globalization
fileEncoding="utf-8"
requestEncoding="utf-8"
responseEncoding="utf-8"
culture="en-US"
uiCulture="en-US"
/>
</system.web>
 
check the image in this link : https://i.imgur.com/JyoDAye.png

Guide me what i am missed...