Page 404 with account creation validation link

-- url of the page with the problem -- : sofleurs.fr
-- HikaShop version -- : 5.1.0
-- HikaMarket version -- : 4.1.1
-- Joomla version -- : 5.1.4
-- PHP version -- : 8.2.20
-- Error-message(debug-mod must be tuned on) -- : 404

Hello,
When I create an account with the Hikamarket form, clicking on the validation link takes me to a 404 page.
If I click on the link again or reload the page, this time I'm correctly directed to the dashboard.
With Joomla's default template, the following error is displayed: Class "JError" not found
Do you have any idea how to solve this problem?
Thank's

It's all good thanks