Error when switching language on home page

[itamaf]

Hello,

When I use the language switcher to change the language on the homepage, I get an error and I don't know why.

This does not happen if I change the language on any other page. The problem is only on the homepage.

I am using "Translate and adapt"  and "CVC multi-currency converter".  You can change the language in the footer.

My store is  : planete-vintage.com