Strict standards: Non-static method hikashop::load

-- HikaShop version -- : 3.4.0
-- Joomla version -- : 3.3.4
-- PHP version -- : 5.5.12
-- Error-message(debug-mod must be tuned on) -- : 1- Strict standards: Non-static method hikashop::loadUser() should not be called statically, assuming $this from incompatible context in : ...\plugins\hikashoppayment\bf_rbsbusinessgateway\bf_rbsbusinessgateway.php on line 62

2- Strict standards: Non-static method hikashop::loadUser() should not be called statically, assuming $this from incompatible context in : ...\plugins\hikashoppayment\bf_rbsglobalgateway\bf_rbsglobalgateway.php on line 31

Bonjour, depuis la mise à jour j'ai des erres de part tout. et la plus chiante c'est dans le panier.
je vous envoi les image des Errors ainsi que le code PHP du plugin.

Merci
Cordialement.