Redis exception: OOM command not allowed when used memory > 'maxmemory'.<br />
<b>Fatal error</b>:  Uncaught TypeError: array_keys(): Argument #1 ($array) must be of type array, null given in /var/www/clients/client2/web2/web/includes/src/Filter/Items/PriceRange.php:189
Stack trace:
#0 /var/www/clients/client2/web2/web/includes/src/Filter/Items/PriceRange.php(189): array_keys()
#1 /var/www/clients/client2/web2/web/includes/src/Filter/Items/PriceRange.php(556): JTL\Filter\Items\PriceRange-&gt;init()
#2 /var/www/clients/client2/web2/web/includes/src/Filter/Items/PriceRange.php(638): JTL\Filter\Items\PriceRange-&gt;getManualRangeOptions()
#3 /var/www/clients/client2/web2/web/includes/src/Filter/SearchResults.php(714): JTL\Filter\Items\PriceRange-&gt;getOptions()
#4 /var/www/clients/client2/web2/web/includes/src/Filter/ProductFilter.php(1654): JTL\Filter\SearchResults-&gt;setFilterOptions()
#5 /var/www/clients/client2/web2/web/includes/src/Router/Controller/ProductListController.php(81): JTL\Filter\ProductFilter-&gt;generateSearchResults()
#6 /var/www/clients/client2/web2/web/includes/src/Router/Controller/CategoryController.php(80): JTL\Router\Controller\ProductListController-&gt;getResponse()
#7 /var/www/clients/client2/web2/web/includes/src/Router/Controller/DefaultController.php(114): JTL\Router\Controller\CategoryController-&gt;getResponse()
#8 /var/www/clients/client2/web2/web/includes/src/Router/Strategy/SmartyStrategy.php(40): JTL\Router\Controller\DefaultController-&gt;getResponse()
#9 /var/www/clients/client2/web2/web/includes/vendor/league/route/src/Route.php(167): JTL\Router\Strategy\SmartyStrategy-&gt;invokeRouteCallable()
#10 /var/www/clients/client2/web2/web/includes/vendor/league/route/src/Dispatcher.php(59): League\Route\Route-&gt;process()
#11 /var/www/clients/client2/web2/web/includes/src/Router/Middleware/PhpFileCheckMiddleware.php(36): League\Route\Dispatcher-&gt;handle()
#12 /var/www/clients/client2/web2/web/includes/vendor/league/route/src/Dispatcher.php(59): JTL\Router\Middleware\PhpFileCheckMiddleware-&gt;process()
#13 /var/www/clients/client2/web2/web/includes/src/Router/Middleware/OptinMiddleware.php(49): League\Route\Dispatcher-&gt;handle()
#14 /var/www/clients/client2/web2/web/includes/vendor/league/route/src/Dispatcher.php(59): JTL\Router\Middleware\OptinMiddleware-&gt;process()
#15 /var/www/clients/client2/web2/web/includes/src/Router/Middleware/CurrencyCheckMiddleware.php(26): League\Route\Dispatcher-&gt;handle()
#16 /var/www/clients/client2/web2/web/includes/vendor/league/route/src/Dispatcher.php(59): JTL\Router\Middleware\CurrencyCheckMiddleware-&gt;process()
#17 /var/www/clients/client2/web2/web/includes/src/Router/Middleware/LocaleCheckMiddleware.php(34): League\Route\Dispatcher-&gt;handle()
#18 /var/www/clients/client2/web2/web/includes/vendor/league/route/src/Dispatcher.php(59): JTL\Router\Middleware\LocaleCheckMiddleware-&gt;process()
#19 /var/www/clients/client2/web2/web/includes/src/Router/Middleware/CartcheckMiddleware.php(25): League\Route\Dispatcher-&gt;handle()
#20 /var/www/clients/client2/web2/web/includes/vendor/league/route/src/Dispatcher.php(59): JTL\Router\Middleware\CartcheckMiddleware-&gt;process()
#21 /var/www/clients/client2/web2/web/includes/src/Router/Middleware/WishlistCheckMiddleware.php(24): League\Route\Dispatcher-&gt;handle()
#22 /var/www/clients/client2/web2/web/includes/vendor/league/route/src/Dispatcher.php(59): JTL\Router\Middleware\WishlistCheckMiddleware-&gt;process()
#23 /var/www/clients/client2/web2/web/includes/src/Router/Middleware/SSLRedirectMiddleware.php(43): League\Route\Dispatcher-&gt;handle()
#24 /var/www/clients/client2/web2/web/includes/vendor/league/route/src/Dispatcher.php(59): JTL\Router\Middleware\SSLRedirectMiddleware-&gt;process()
#25 /var/www/clients/client2/web2/web/includes/src/Router/Middleware/MaintenanceModeMiddleware.php(40): League\Route\Dispatcher-&gt;handle()
#26 /var/www/clients/client2/web2/web/includes/vendor/league/route/src/Dispatcher.php(59): JTL\Router\Middleware\MaintenanceModeMiddleware-&gt;process()
#27 /var/www/clients/client2/web2/web/includes/vendor/league/route/src/Strategy/ApplicationStrategy.php(37): League\Route\Dispatcher-&gt;handle()
#28 /var/www/clients/client2/web2/web/includes/vendor/league/route/src/Dispatcher.php(59): Psr\Http\Server\MiddlewareInterface@anonymous-&gt;process()
#29 /var/www/clients/client2/web2/web/includes/vendor/league/route/src/Dispatcher.php(53): League\Route\Dispatcher-&gt;handle()
#30 /var/www/clients/client2/web2/web/includes/vendor/league/route/src/Router.php(111): League\Route\Dispatcher-&gt;dispatchRequest()
#31 /var/www/clients/client2/web2/web/includes/src/Router/Router.php(659): League\Route\Router-&gt;dispatch()
#32 /var/www/clients/client2/web2/web/includes/src/Shop.php(455): JTL\Router\Router-&gt;dispatch()
#33 /var/www/clients/client2/web2/web/index.php(7): JTL\Shop::dispatch()
#34 {main}
  thrown in <b>/var/www/clients/client2/web2/web/includes/src/Filter/Items/PriceRange.php</b> on line <b>189</b><br />