Hi,

If this is happening always and not able solve, create a support ticket in:  https://www.odoo.com/help

Thanks

Hi,

If the issue persists, consult the Odoo documentation or reach out to Odoo support for further assistance. They may have specific recommendations or fixes for service worker-related issues in Odoo 17 online.

Hope it helps

Yes I did thanks, I'm waiting for feedback. Anything I saw on other forums mentioned community installs on Unix. 

There's a link with cookies, and it doesn't happen in dev mode with assets. Saw one suggestion to rebuild stack assets, but didn't solve.

Edit:

I'm delighted to say that the error seems to have disappeared after a reboot of the PC.