ajax file field not uploading

-- HikaShop version -- : 4.4.3
-- Joomla version -- : 4.0.0-rc3
-- PHP version -- : 7.4.16
-- Error-message(debug-mod must be tuned on) -- : no error message

Hi,

I use AJAX fields for file upload on the productpages. When testing Joomla 4, the file won't upload, the field is displaying the hika error message, but there's no system error visible (the "error reporting" and "debug mode" settings are turned on).

Ok, thanks it worked.