Payment page goes blank

-- url of the page with the problem -- : www.institutolean.org/index.php/es/shop/...out/task-step/step-3
-- HikaShop version -- : 4.2.1
-- Joomla version -- : 3.9.10
-- PHP version -- : 7.3
-- Browser(s) name and version -- : safari
-- Error-message(debug-mod must be tuned on) -- : blank screen

on the buying process, at the page on step 3 is blank....!
it should be the shipping and payment

After 1 and 2 succesful screens (name, details...), third is blank. All.

Hello,

If you have a blank page, I would recommend to activate first the "error reporting" and "debug mode" settings of the Joomla configuration.
That will then display an error message on that blank page which will help us (and you better) understand what's going on and provide a solution.

Kind regards,
Mohamed Thelji.