Update chatStream.js

server/chatStream.js

@@ -61,7 +61,7 @@ async function websocketChatStream(body, headers, onToken) {
       : LIGHTNING_BASE.replace("http", "ws")
     ) + "/ws/chat";
   await new Promise(resolve => {
-    ws.onopen = resolve;
+    ws.on("open", resolve);
   });
 
   ws.send(JSON.stringify({
@@ -105,7 +105,7 @@ async function websocketChatStream(body, headers, onToken) {
       }
     });
 
-    ws.onerror = reject;
+    ws.on("error", reject);
   });
 }