moved the scope of the if condition.

edx_proctoring/static/proctoring/templates/student-proctored-exam-attempts.underscore

 <div class="wrapper-content wrapper">
+    <% var is_proctored_attempts = proctored_exam_attempts.length !== 0 %>
+    <% if (is_proctored_attempts) { %>
         <section class="content">
             <div class="top-header">
                 <div class='search-attempts'>
@@ -75,8 +77,6 @@
                 </ul>
                 <div class="clearfix"></div>
             </div>
-        <% var is_proctored_attempts = proctored_exam_attempts.length !== 0 %>
-        <% if (is_proctored_attempts) { %>
             <table class="exam-attempts-table">
                 <thead>
                     <tr class="exam-attempt-headings">
@@ -119,6 +119,10 @@
                     <% }); %>
                 </tbody>
             </table>
-        <%} %>
         </section>
+    <% } else { %>
+        <p> No exam results found.
+    <% } %>
+
+
 </div>