minor edits

StudentHouseDashboard/WebApp/Pages/Error/Unexpected.cshtml

@@ -0,0 +1,13 @@
+@page
+@model WebApp.Pages.Error.UnexpectedModel
+@{
+    ViewData["Title"] = "Unexpected error";
+}
+<div class="text-center">
+    <h1 class="display-4">Uh oh! An unexpected error has occured.</h1>
+    <img src="https://images.pexels.com/photos/96938/pexels-photo-96938.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=1" />
+    <p>
+        Contact your system admistrator if this cat appears too often on your screen.
+    </p>
+</div>
+<p>Photo: <a href="https://pexels.com">pexels.com</a></p>

StudentHouseDashboard/WebApp/Pages/Error/Unexpected.cshtml.cs

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+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+
+namespace WebApp.Pages.Error
+{
+    public class UnexpectedModel : PageModel
+    {
+        public void OnGet()
+        {
+        }
+    }
+}