[FIX] portal: untranslated error message

And specify which group is incorrect

Closes #17275

addons/portal/i18n/portal.pot

@@ -90,6 +90,12 @@ msgstr ""
 msgid "Email"
 msgstr ""
 
+#. module: portal
+#: code:addons/portal/wizard/portal_wizard.py:130
+#, python-format
+msgid "Group %s is not a portal"
+msgstr ""
+
 #. module: portal
 #: model:ir.model.fields,field_description:portal.field_portal_wizard_id
 #: model:ir.model.fields,field_description:portal.field_portal_wizard_user_id

addons/portal/wizard/portal_wizard.py

@@ -127,7 +127,7 @@ class PortalWizardUser(models.TransientModel):
         for wizard_user in self.sudo().with_context(active_test=False):
             group_portal = wizard_user.wizard_id.portal_id
             if not group_portal.is_portal:
-                raise UserError('Not a portal: ' + group_portal.name)
+                raise UserError(_('Group %s is not a portal') % group_portal.name)
             user = wizard_user.partner_id.user_ids[0] if wizard_user.partner_id.user_ids else None
             # update partner email, if a new one was introduced
             if wizard_user.partner_id.email != wizard_user.email: