Problem to access back office - get following error

[Mario]

Hi

Today I wanted to login to the backoffice of a customer shop.

I got a blank screen so I turned on to show errors.

I got this error:
Call to undefined method Tools::getHttpHost() in /path/adminfolder/init.php

what, does this mean?

thanks a lot

[rocky]

It seems your admin/init.php file and classes/Tools.php file are from different PrestaShop versions. You should make sure that they are from the same version of PrestaShop, and make sure that the getHttpHost() function exists in classes/Tools.php.