I do not understand why you do not answer the questions in the forum.
I do search of the subjects, but all your answers are to send information instead of to respond in the forum and thus facilitate for the users.
My site is in production, so I can not send the link, but at DEMO itself, page 404 does not work. It leaves a blank page.
Please, how do I solve this ???
Thanks,
Marcia

Dear marciacavalc,

Please go to the file: templates\sj_personal\error.php and remove this code:
require_once(JPATH_LIBRARIES.'/src/document/renderer/html/HeadRenderer.php');

Thanks

Sometimes it really helps to edit page 404 or error. They are written in the demo version and something may not work. but very sad when it does not work in a full-fledged version of the template. In general, the templates are functional enough. I always choose between local and from templatemonster. The choice is rather complicated.

In demos, often limit this page, because they consider it not the main one. Try to purchase a full template. Or even order the design of this page separately. It will be easier.