Mobile menu does not work

After migrating to J4, the mobile menu does not work anymore.

agungs.0408429181.nl

I created a new subdomain with a clean JA Simpli J4 installation. After update to 4.2.2 the mobile menu does not work as well.

You can backup this file: ROOT/templates/ja_simpli/index.php

and replace with this file (unzip first)

indexphp.zip

3kB

Thx!!