Fix Express 5 SPA fallback route

server.js

@@ -47,7 +47,7 @@ app.put('/api/admin-content', async (req, res) => {
 
 app.use(express.static(DIST_DIR))
 
-app.get('*', async (_req, res) => {
+app.use(async (_req, res) => {
   try {
     const html = await readFile(INDEX_FILE, 'utf8')
     res.type('html').send(html)