Update

src/handler.js

···
         const eventListener = new KnotEventListener({
           knotDomain,
         });
-        await eventListener.start();
         knotEventListeners.push(eventListener);
       }
     }
+    await Promise.all(
+      knotEventListeners.map((eventListener) => eventListener.start())
+    );
     return new Handler({ config, pagesServiceMap, knotEventListeners });
   }
 

src/knot-event-listener.js

···
     ws.onmessage = (event) => this.handleMessage(event);
     return new Promise((resolve) => {
       ws.onopen = () => {
+        console.log("Knot event listener connected to:", this.knotDomain);
         resolve();
       };
     });