after update on 8.6.13 page white

after updating the page we only see the spinner.

There is no error message
Also in the error log is nothing inside

The theme is MagBlog - News & Editorial Magazine Drupal 8 Theme

Hello,

Contact with your item author hope they will help you out from your issue.

Thanks!

I tried to contact the programmer with these templates, unfortunately he did not answer.

what can I do that will help me anyway

Willi da Silva Borges

Hello,

Here is about Envato Item support policy

If you deserve support and author does not provided support they open a Help Ticket Envato Support will help you.
Also you can make a dispute against that item author.
Here is no chance for scamming.Enavto Authority will not tolerate this type of behavior.

Thanks!