Update

package.json

···
     "tangled-pages": "bin/tangled-pages.js"
   },
   "scripts": {
-    "start": "npm run dev:express",
-    "dev": "npm run dev:express",
-    "dev:express": "nodemon src/server.js",
+    "start": "npx tangled-pages --config config.example.json",
     "dev:worker": "wrangler dev --port 3000"
   },
   "dependencies": {

src/worker.js

···
 
 async function handleSiteRequest(request, site) {
   const url = new URL(request.url);
-  const host = url.host;
   const route = url.pathname;
   const pagesService = new PagesService({
     domain: site.knotDomain,
···
       }
     }
     // Multi site mode
-    const matchingSite = config.sites.find(
+    const matchingSite = config.sites?.find(
       (site) => site.subdomain === subdomain
     );
     if (matchingSite) {