add

app/exception/MyBusinessException.php

@@ -0,0 +1,14 @@
+<?php
+namespace app\exception;
+
+use support\exception\BusinessException;
+use Webman\Http\Request;
+use Webman\Http\Response;
+
+class MyBusinessException extends BusinessException
+{
+    public function render(Request $request): ?Response
+    {
+        return new Response(200, ['Content-Type' => 'application/json'], $this->getMessage());
+    }
+}