Hi,
I just figured out taht if I put any slider on Slider position (even included with template) I get 1387 lines in apache error log (over 500kB for 1 page load):
[Fri Jun 11 12:33:41.117773 2021] [php7:warn] [pid 85138] [client 83.3.20.83:50714] PHP Warning: Parameter 1 to plgVmCalculationAdvanced_calculation::plgVmInGatherEffectRulesPr
oduct() expected to be a reference, value given in /data/www/www.hamradioshop.pl/www/htdocs/libraries/joomla/event/event.php on line 70, referer: www10.hamradioshop.pl/p
l/

If I turn of any slider there is no errors .
Can ou help me?

Dear sir,

Please submit ticket and send your site account (admin + FTP) in your ticket, we will check it directly.

Thanks