added an alert block displaying form errors

anonticket/templates/anonticket/user_login.html

@@ -17,6 +17,7 @@
 {% endblock %}
 <!-- block content block is where page contents go -->
 {% block content %}
+<!-- Explanation block -->
 <div class="row">
   <div class="col-12">
     <p class="pr-5">
@@ -26,10 +27,31 @@
     </p>
   </div>
 </div>
+<!-- End Explanation block -->
+<!-- Start rendering form -->
+<form method="get" class="p-5">
+<!-- Determine if there are form validation errors. If so, render them here. -->
+{% if form.non_field_errors %}
+<div class="row">
+  <div class="col-12">
+    {% for error in form.non_field_errors %}
+    <div class="list-unstyled alert alert-primary" role="alert">
+      {{error}}
+    </div>
+    {% endfor %}
+  </div>
+</div>
+{% endif %}
+<!-- Render form -->
+
 <div class="row">
   <div class="col-12">
     <form method="get" class="p-5">
-      <ul class="bg-light p-5 flex-form">{{ form.as_ul }}</ul>
+
+
+      <ul class="bg-light p-5 flex-form">
+        {{ form.as_ul }}
+      </ul>
       <button type="submit" class="btn btn-lg btn-primary mr-2 mt-3 new-line">Login With This Identifier</button>
     </form>
   </div>