[solved] Sef url link to blank page

hello
sef url don't work in hikashop. if active, all links point to white pages. instead if I deactivate the links work well
i use screenshots to explain

Hi,

Can you turn on the joomla debug mode, and set the error reporting to maximum and see if an error message is returned ?

You have maybe a wrong configuration in your .htaccess file. And your server don't support correctly sef urls.