OneBot: Leantime 改造版源码（BOM/Univer 表格/AI 接管/品牌替换等）

app/Domain/Errors/Controllers/Error501.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Leantime\Domain\Errors\Controllers;
+
+use Leantime\Core\Controller\Controller;
+use Symfony\Component\HttpFoundation\Response;
+
+class Error501 extends Controller
+{
+    /**
+     * Displays the 501 Not Implemented error page.
+     *
+     * @param  array  $params  Request parameters
+     */
+    public function get(array $params): Response
+    {
+        return $this->tpl->display(
+            template: 'errors.error501',
+            layout: 'error',
+            responseCode: 501
+        );
+    }
+}