The website cannot access the contents of the Views folder by default.
But it can be changed.
There is a web.config file under Views, and the following code in it prevents request processing in the Views folder

<system.webServer>
    <handlers>
      <remove name="BlockViewHandler"/>
      <add name="BlockViewHandler" path="*" verb="*" preCondition="integratedMode" type="System.Web.HttpNotFoundHandler" />
    </handlers>
  </system.webServer>

Oh. It’s been solved. It’s weird. Pictures can’t be placed under the sharepage folder. I just create a new folder. -_-||