fix: one of sentry issues

src/App.jsx

@@ -48,7 +48,7 @@ const onKeycloakEvent = async (event) => {
   if (["onAuthRefreshSuccess", "onAuthSuccess"].includes(event)) {
     Sentry.setUser(keycloak.tokenParsed);
 
-    const kcRoles = keycloak.tokenParsed.roles;
+    const kcRoles = keycloak.tokenParsed.roles || [];
     let role = null;
 
     if (kcRoles.includes("chairman")) {