Virtuemart Main component dont shows products anymore

[saturnales]

Hi,

Since a hard backup of my server, virtuemart dont shows any product anymore in the front
Curiously the virtumart_products module is able to show it, but not the main component.

when i try to add a product in cart from the module, an blank page occurs, but if i reload the page, the product ha been added to the cart with an error :

Notice: Trying to get property of non-object in "PATH"/httpdocs/administrator/components/com_virtuemart/models/product.php on line 1121

the url : https://www.bpa-institute.com/index.php?option=com_virtuemart&view=categories&virtuemart_category_id=0&Itemid=1058&lang=fr

[jenkinhill]

First: http://forum.virtuemart.net/index.php?topic=79799.0

Blank page: http://forum.virtuemart.net/index.php?topic=117042.0

PHP Notice: http://forum.virtuemart.net/index.php?topic=102555.0