Cannot use a scalar value as an array

/var/www/vhosts/afoundation.kz/httpdocs/wow-cardru/app/Onkubik/ResponseDev.php:39
File:lineFunction
/var/www/vhosts/afoundation.kz/httpdocs/wow-cardru/www/index.php:6include
/var/www/vhosts/afoundation.kz/httpdocs/wow-cardru/bootstrap.php:10require
/var/www/vhosts/afoundation.kz/httpdocs/wow-cardru/app/Onkubik/Onkubik.php:67Onkubik->run
/var/www/vhosts/afoundation.kz/httpdocs/wow-cardru/app/Onkubik/Onkubik.php:225Pages\FrontendController->pageAction
/var/www/vhosts/afoundation.kz/httpdocs/wow-cardru/cube/Pages/Controller/FrontendController.php:49App\Response->render
/var/www/vhosts/afoundation.kz/httpdocs/wow-cardru/app/Response/Response.php:43App\Response->renderPartial
/var/www/vhosts/afoundation.kz/httpdocs/wow-cardru/app/Response/Response.php:118require
/var/www/vhosts/afoundation.kz/httpdocs/wow-cardru/custom/view/index.php:13App\Response->addJs
/var/www/vhosts/afoundation.kz/httpdocs/wow-cardru/app/Response/Response.php:156App\Onkubik\ResponseDev->prepareAsset