Fix

node_modules/vitepress/dist/client/app/ssr.js

@@ -0,0 +1,10 @@
+// entry for SSR
+import { createApp } from './index';
+import { renderToString } from 'vue/server-renderer';
+export async function render(path) {
+    const { app, router } = await createApp();
+    await router.go(path);
+    const ctx = { content: '' };
+    ctx.content = await renderToString(app, ctx);
+    return ctx;
+}