BO error after translating string

[karin_aeris]

Hello everyone,

 

I am creating my own template from the classic template. So far I am only working on the index page, which is almost done. I only need to translate the complete page into a second language. But here I ran into a problem: After translating a string (via modifying translations in BO) and switching between my own template and the classic template (via design in BO) I get a HTTP ERROR 500  in BO. FO is still working ok. This happens with my own translations but the same with the existing translationstrings of the classic template. I tried this even in a clean prestashop installation, with just the classic template and a copy of the classic template with only the necessary changes in the theme.yml file. I tested it locally with XAMPP and online via our hosting provider (OVH) all with the same results. In debug modus I got:

FatalErrorException in ErrorHandler.php line 47:

Compile Error: Cannot declare class Symfony\Component\Debug\ErrorHandler, because the name is already in use

in ErrorHandler.php line 47

 

I am using prestashop 1.7.1.2.

 

Does anyone know if this is an known problem or something I did wrong?

 

Thank you.

Karin