[experiments] Only show user errors in case the block is not cached

beat/web/experiments/templates/experiments/view.html

@@ -256,7 +256,7 @@
                     </li>
                     {% endif %}
                     {% if block.done and block_status != 'Cancelled' %}
-                    {% if error_report %}
+                    {% if error_report and block_status != 'Cached' %}
                     <li>Captured Errors (on user code):
                       <pre class="console-output">{{ error_report }}</pre>
                     </li>