Tabs works only in the designer preview mode but not in the published site

Hello! i’m working on a new website for a client and i have a issue with the tabs.
When i’m in the designer, the tabs works perfectly,
but when i publish the site, the tabs just not work.

what could be the problem?

Here is my site Read-Only:

(it will not work from the read only as well)

Try setting a primary locale.
You’re getting script errors which are likely interfering with elements like tabs and dropdowns.