修改报错

vendor/xaboy/form-builder/src/Form.php

@@ -397,6 +397,7 @@ class Form
     {
         ob_start();
         $form = $this;
+        $rule = $this->getRules();
         require_once dirname(__FILE__) . DIRECTORY_SEPARATOR . 'view' . DIRECTORY_SEPARATOR . 'formScript.php';
         $script = ob_get_clean();
         return $script;