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diff --git a/web/themes/contrib/bootstrap/src/Traits/FormAutoloadFixTrait.php b/web/themes/contrib/bootstrap/src/Traits/FormAutoloadFixTrait.php
new file mode 100644
index 000000000..a5f44b437
--- /dev/null
+++ b/web/themes/contrib/bootstrap/src/Traits/FormAutoloadFixTrait.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace Drupal\bootstrap\Traits;
+
+use Drupal\bootstrap\Bootstrap;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Trait FormAutoloadFixTrait.
+ */
+trait FormAutoloadFixTrait {
+
+  /**
+   * Adds the autoload fix include file to the form state.
+   *
+   * This may be necessary if you notice your AJAX callbacks not working.
+   *
+   * @param \Drupal\Core\Form\FormStateInterface $form_state
+   *   The form state object.
+   */
+  public static function formAutoloadFix(FormStateInterface $form_state) {
+    $files = $form_state->getBuildInfo()['files'];
+
+    // Only add the include once.
+    $file = Bootstrap::autoloadFixInclude();
+    $key = array_search($file, $files);
+    if ($key === FALSE) {
+      array_unshift($files, $file);
+      $form_state->addBuildInfo('files', $files);
+    }
+  }
+
+}