@jetway,
I don't know. The hosting provider keeps my 3 different sites (ZenCart, WP and Prestashop).
The hosting provider changed the cpanel to a new"tool" two days ago. I don't know how it worked before it.
Prestashop is the only one that is not working correctly.
@musicmaster,
I get this error only when I try to submit the form.
Thank you!