Problem with prestashop theme ( debug mode )

[Krixxx]

Hello

I am quite new with prestashop. I have installed theme called hanoistore . Some of the items on webpage do not work ( pictures added ). When i try to edit some of the html blocks it gives me error:

Attempted to load class "Managerblock" from the global namespace.
Did you forget a "use" statement?

I will add screens of the problem. Already tried to install it from scratch, but problem is the same. Can someone maybe help me ?

Thank You in advance

 

[JBW]

All these Dor options seem to be modules coming with your theme, they seem to be buggy or incompatible with your Prestashop version. Contact the theme developer to get support