Add error page

proxy/web/src/components/PoweredByNetBird.tsx

@@ -2,11 +2,16 @@ import { NetBirdLogo } from "./NetBirdLogo";
 
 export function PoweredByNetBird() {
   return (
-    <div className="flex items-center justify-center mt-8 gap-2 group cursor-pointer">
+    <a
+      href="https://netbird.io?utm_source=netbird-proxy&utm_medium=web&utm_campaign=powered_by"
+      target="_blank"
+      rel="noopener noreferrer"
+      className="flex items-center justify-center mt-8 gap-2 group cursor-pointer"
+    >
       <span className="text-sm text-nb-gray-400 font-light text-center group-hover:opacity-80 transition-all">
         Powered by
       </span>
       <NetBirdLogo size="small" mobile={false} />
-    </div>
+    </a>
   );
 }