Cannot declare class ... because the name is already in use

[musicmaster]

I am trying to change the theme of a PS 1.7.6.1 webshop.

But when I try to activate the new theme I get the error 

The picture is from the first error. But after I had deleted all theme related modules I got similar errors for basic Prestashop modules like ps_productcomments, ps_currencyselector, ps_image_slider and ps_featuredproducts.

Does anyone recognize this and know how to get out of this?

 

[ClassyDevs]

Hello, Some how the module class is called. Will you check if your theme's module overwrite any files from overwrite file. Some how the class is called multiple times this why the issue occure

 

Thank you