diff --git a/js/src/router/guards/register-guard.ts b/js/src/router/guards/register-guard.ts
index 9cde41b92..07b886b5c 100644
--- a/js/src/router/guards/register-guard.ts
+++ b/js/src/router/guards/register-guard.ts
@@ -12,6 +12,7 @@ export const beforeRegisterGuard: NavigationGuard = async (to, from, next) => {
   );
 
   onResult(({ data }) => {
+    if (!data) return next();
     const { config } = data;
 
     if (!config.registrationsOpen && !config.registrationsAllowlist) {