diff --git a/VAR.WebFormsCore.Tests/Fakes/FakeWebContext.cs b/VAR.WebFormsCore.Tests/Fakes/FakeWebContext.cs
index c108a2f..3e9362c 100644
--- a/VAR.WebFormsCore.Tests/Fakes/FakeWebContext.cs
+++ b/VAR.WebFormsCore.Tests/Fakes/FakeWebContext.cs
@@ -72,7 +72,7 @@ public class FakeWebContext : IWebContext
 
     public void PrepareUncacheableResponse()
     {
-        throw new NotImplementedException();
+        // TODO: Mark as Uncacheable response
     }
 }
 
diff --git a/VAR.WebFormsCore.Tests/Pages/FrmEchoTests.cs b/VAR.WebFormsCore.Tests/Pages/FrmEchoTests.cs
index 756663b..56503ec 100644
--- a/VAR.WebFormsCore.Tests/Pages/FrmEchoTests.cs
+++ b/VAR.WebFormsCore.Tests/Pages/FrmEchoTests.cs
@@ -17,7 +17,8 @@ public class FrmEchoTests
         string result = fakeWebContext.FakeWritePackages.ToString("");
         Assert.Equal(
             expected:   """
-                        <pre><code>Header:{ }
+                        <pre><code>
+                        Header:{ }
                         Query:{ }
                         Form:{ }
                         </code></pre>
@@ -37,7 +38,8 @@ public class FrmEchoTests
         string result = fakeWebContext.FakeWritePackages.ToString("");
         Assert.Equal(
             expected:   """
-                        <pre><code>Header:{ }
+                        <pre><code>
+                        Header:{ }
                         Query:{ "Test": "Value" }
                         Form:{ }
                         </code></pre>
@@ -57,7 +59,8 @@ public class FrmEchoTests
         string result = fakeWebContext.FakeWritePackages.ToString("");
         Assert.Equal(
             expected:   """
-                        <pre><code>Header:{ }
+                        <pre><code>
+                        Header:{ }
                         Query:{ }
                         Form:{ "Test": "Value" }
                         </code></pre>
diff --git a/VAR.WebFormsCore.Tests/Pages/FrmErrorTests.cs b/VAR.WebFormsCore.Tests/Pages/FrmErrorTests.cs
new file mode 100644
index 0000000..475e6a3
--- /dev/null
+++ b/VAR.WebFormsCore.Tests/Pages/FrmErrorTests.cs
@@ -0,0 +1,28 @@
+using VAR.WebFormsCore.Pages;
+using VAR.WebFormsCore.Tests.Fakes;
+using Xunit;
+
+namespace VAR.WebFormsCore.Tests.Pages;
+
+public class FrmErrorTests
+{
+    [Fact]
+    public void ProcessRequest__TestException()
+    {
+        FakeWebContext fakeWebContext = new();
+        FrmError frmError = new(new Exception("Test"));
+        
+        frmError.ProcessRequest(fakeWebContext);
+
+        string result = fakeWebContext.FakeWritePackages.ToString("");
+        Assert.Equal(
+            expected:   """
+                        <!DOCTYPE html>
+                        <html ><head ><title>Application Error</title><meta  content="IE=Edge" http-equiv="X-UA-Compatible" /><meta  content="text/html; charset=utf-8" http-equiv="content-type" /><meta  name="author" /><meta  name="Copyright" /><meta  name="viewport" content="width=device-width, initial-scale=1, maximum-scale=4, user-scalable=1" /><script type="text/javascript" src="ScriptsBundler?v=1.0.0.0"></script>
+                        <link href="StylesBundler?v=1.0.0.0" type="text/css" rel="stylesheet"/>
+                        </head><body ><form  id="formMain" name="formMain" method="post" action="FrmError"><div  class="divHeader"><a  href="."><h1 ></h1></a><input type="submit"  id="ctl00_btnPostback" name="ctl00_btnPostback" class="button" style="display: none;" value="Postback"></input><div  class="divUserInfo"></div></div><div  class="divContent"><h2 >Application Error</h2><p><b>Message:</b> Test</p><p><b>Stacktrace:</b></p><div  class="divCode"><pre><code></code></pre></div></div></form></body></html>
+                        """,
+            actual: result);
+    }
+
+}
\ No newline at end of file
diff --git a/VAR.WebFormsCore/Pages/FrmEcho.cs b/VAR.WebFormsCore/Pages/FrmEcho.cs
index 005dfa9..ca02bc1 100644
--- a/VAR.WebFormsCore/Pages/FrmEcho.cs
+++ b/VAR.WebFormsCore/Pages/FrmEcho.cs
@@ -10,7 +10,7 @@ public class FrmEcho : IHttpHandler
     public void ProcessRequest(IWebContext context)
     {
         context.ResponseContentType = "text/html";
-        context.ResponseWrite("<pre><code>");
+        context.ResponseWrite("<pre><code>\n");
         context.ResponseWrite($"Header:{JsonWriter.WriteObject(context.RequestHeader, indent: true)}\n");
         context.ResponseWrite($"Query:{JsonWriter.WriteObject(context.RequestQuery, indent: true)}\n");
         context.ResponseWrite($"Form:{JsonWriter.WriteObject(context.RequestForm, indent: true)}\n");
