Issue #3388548: PHP Error: value is an invalid render array key in...

Issue #3388548: PHP Error: value is an invalid render array key in Drupal\Core\Render\Element::children

Closes #3388548

log_entity_operations_entity/templates/log-entity-operations-json-collapsible.html.twig

@@ -59,7 +59,11 @@
         {% for key, value in data.values %}
           <tr>
             <td>{{ key }}</td>
-            <td>{{ value }}</td>
+            {% if value is not iterable %}
+              <td>{{ value }}</td>
+            {% else %}
+              <td>{{ value|json_encode }}</td>
+            {% endif %}
           </tr>
         {% endfor %}
       </tbody>