diff --git a/pygoat/introduction/templates/Lab/A9/a9.html b/pygoat/introduction/templates/Lab/A9/a9.html
index 7040f57ab..5656e9d1d 100644
--- a/pygoat/introduction/templates/Lab/A9/a9.html
+++ b/pygoat/introduction/templates/Lab/A9/a9.html
@@ -15,11 +15,23 @@ <h4>What is Using Components with Know Vulnerability means?</h4>
         <button class="coll btn btn-info">Lab Details</button>
         <div class="lab">
               <p class="bp">
-                 This lab helps us to understand some areas where this threat can occur.
-                  <br>The user on accessing the lab is given with certain libraries used by jack in his project.
-                  Try to identify if they are safe or vulnerable.
-
-
+                 This lab helps us to understand why components with know vulnerability can be a serious issue.
+                  <br>
+                 The user on accessing the lab is provided with a feature to convert yaml files into json objects.
+                  The user needs to choose an yaml file and click upload to get the json data.
+                  There is also a get version feature which tells the user the version of the library the app uses.
+
+                  <b>Exploiting the vulnerability.</b>
+                  <ul>
+                    <li>The app uses <code>pyyaml 5.1</code> Which is vulnerable to code execution.</li>
+                    <li>You can google the library with the version to get the poc and vulnerability details</li>
+                    <li> Create An yaml file with this payload:</li>
+            <code>!!python/object/apply:subprocess.Popen<br>
+                - ls
+            </code>
+             <li> On Uploading this file the user should be able to see the output of the command executed.</li>
+
+                  </ul>
 
                 </p>
 </p>
@@ -29,7 +41,7 @@ <h4>What is Using Components with Know Vulnerability means?</h4>
 
               </p>
         </div>
-        <h4>Mitigation</h4>
+        <br><h4>Mitigation</h4>
              <p class="bp">
                  <ul>
                 <li>Remove unused dependencies, unnecessary features, components, files, and documentation.</li>
diff --git a/pygoat/introduction/templates/Lab/A9/a9_lab.html b/pygoat/introduction/templates/Lab/A9/a9_lab.html
index d7cd63724..adad240ae 100644
--- a/pygoat/introduction/templates/Lab/A9/a9_lab.html
+++ b/pygoat/introduction/templates/Lab/A9/a9_lab.html
@@ -2,7 +2,7 @@
 {% load static %}
 {% block content %}
 {% block title %}
-<title>Broken Access Control.</title>
+<title>A9</title>
 {% endblock  %}
 
 <div class="jumbotron">
diff --git a/pygoat/introduction/templates/introduction/base.html b/pygoat/introduction/templates/introduction/base.html
index dae1e7d02..f215d5d70 100644
--- a/pygoat/introduction/templates/introduction/base.html
+++ b/pygoat/introduction/templates/introduction/base.html
@@ -57,9 +57,6 @@ <h3>PyGoat</h3>
                             <li>
                                 <a href="/cmd">Command Injection</a>
                             </li>
-                            <li>
-                                <a href="#">Page 3</a>
-                            </li>
                         </ul>
 						 <a href="/bau">
                             <i class="fas fa-bug"></i>
diff --git a/pygoat/introduction/views.py b/pygoat/introduction/views.py
index b656c82d1..94c97e0d7 100644
--- a/pygoat/introduction/views.py
+++ b/pygoat/introduction/views.py
@@ -256,8 +256,12 @@ def a9_lab(request):
 
         try :
             file=request.FILES["file"]
-            data = yaml.load(file)
-            return render(request,"Lab/A9/a9_lab.html",{"data":data})
+            try :
+                data = yaml.load(file)
+                return render(request,"Lab/A9/a9_lab.html",{"data":data})
+            except:
+                return render(request, "Lab/A9/a9_lab.html", {"data": "Error"})
+
         except:
             return render(request, "Lab/A9/a9_lab.html", {"data":"Please Upload a Yaml file."})