To grant the missing access rights:

1. Activate Developer Mode → Settings → General Settings → Developer Mode.
   
   
2. Go to Settings → Technical → Database Structure → Models.
   
   
3. • Search for ir.ui.view.
     
     
4. Open Access Rights tab.
   
   
5. • Add a new rule for the group Website Editor/Designer (or the group you’re using).
     
     
   • Allow Read access at minimum.
     
     

Save and reload — Editors/Designers should now be able to edit website blocks.

Hi,

This error happens because Editors/Designers don’t have read rights on the visibility_password field in ir.ui.view. Admins don’t see the error because they have full access.

Fix:

    Go to Settings → Users & Companies → Groups

    Open Website/Editor (and Website/Designer if needed)

    In Access Rights, give Read access on ir.ui.view

    Save, then have users log out/in

Workaround: Temporarily add the user to Administration/Settings until proper permissions are set.

Odoo 18.4 tightened security on website views, which unintentionally blocked non-admin editors.

After applying, Editors/Designers should be able to edit websites again without errors.

Hope it helps