Add error page

proxy/web/src/main.tsx

@@ -2,9 +2,17 @@ import { StrictMode } from 'react'
 import { createRoot } from 'react-dom/client'
 import './index.css'
 import App from './App.tsx'
+import { ErrorPage } from './pages/ErrorPage.tsx'
+import { getData } from '@/data'
+
+const data = getData()
 
 createRoot(document.getElementById('root')!).render(
   <StrictMode>
-    <App />
+    {data.page === 'error' && data.error ? (
+      <ErrorPage {...data.error} />
+    ) : (
+      <App />
+    )}
   </StrictMode>,
 )