we report a problem at lukysipy.cz, where the web generates a huge number of bugs such as:
[15-Aug-201804:19:12] WARNING:[pool lukysipy_cz] child 47033 said into stderr:"NOTICE: PHP message: PHP Notice: Undefined offset: 1 in
/data/www/23045/lukysipy_cz/www/templates/marvays_lukysipycz_2012_b/html/com_virtuemart/category/flexv2.php on line 637"
Looks like, you enabled the rollOver feature but some of your products don't have the 2nd picture thus causes PHP notices for those missing images. You may change that line to this below to prevent the error reporting: