Dear, you can try
– in module/snsavaztheme/snsavazcore.php
$this->context->controller->addJqueryUI(‘ui.sortable’);
=>
$this->context->controller->addJquery();
$this->context->controller->addJqueryUI(‘ui.sortable’);
– BO > Advanced Parameters > Performance
+ Disable feature “Disable non PrestaShop modules” and “Disable all overrides”
+ Clear cache
Thank you
