Undefined array key "multiple"

[w3scout]

Context
Contao version: 5.3.31
Bundle version: 1.10.2
PHP version: 8.3

Description

Stack Trace:
ErrorException:
Warning: Undefined array key "multiple"

at vendor/heimrichhannot/contao-slick-bundle/src/Config/SlickConfig.php:195
at HeimrichHannot\SlickBundle\Config\SlickConfig->createSettings()
(vendor/heimrichhannot/contao-slick-bundle/src/EventListener/HookListener.php:61)
at HeimrichHannot\SlickBundle\EventListener\HookListener->onParseArticles()
(vendor/contao/news-bundle/contao/modules/ModuleNews.php:232)
at Contao\ModuleNews->parseArticle()
(vendor/contao/news-bundle/contao/modules/ModuleNews.php:292)
at Contao\ModuleNews->parseArticles()
(vendor/contao/news-bundle/contao/modules/ModuleNewsList.php:157)
at Contao\ModuleNewsList->compile()
(vendor/contao/core-bundle/contao/modules/Module.php:213)
at Contao\Module->generate()
(vendor/contao/news-bundle/contao/modules/ModuleNewsList.php:73)
at Contao\ModuleNewsList->generate()
(vendor/contao/core-bundle/contao/library/Contao/Controller.php:405)
at Contao\Controller::getFrontendModule()
(vendor/contao/core-bundle/contao/elements/ContentModule.php:59)
at Contao\ContentModule->generate()
(vendor/contao/core-bundle/contao/library/Contao/Controller.php:601)
at Contao\Controller::getContentElement()
(vendor/contao/core-bundle/contao/modules/ModuleArticle.php:189)
at Contao\ModuleArticle->compile()
(vendor/contao/core-bundle/contao/modules/Module.php:213)
at Contao\Module->generate()
(vendor/contao/core-bundle/contao/modules/ModuleArticle.php:69)
at Contao\ModuleArticle->generate()
(vendor/contao/core-bundle/contao/library/Contao/Controller.php:490)
at Contao\Controller::getArticle()
(vendor/contao/core-bundle/contao/library/Contao/Controller.php:356)
at Contao\Controller::getFrontendModule()
(vendor/contao/core-bundle/contao/pages/PageRegular.php:183)
at Contao\PageRegular->prepare()
(vendor/contao/core-bundle/contao/pages/PageRegular.php:47)
at Contao\PageRegular->getResponse()
(vendor/contao/core-bundle/contao/controllers/FrontendIndex.php:65)
at Contao\FrontendIndex->renderPage()
(vendor/symfony/http-kernel/HttpKernel.php:181)
at Symfony\Component\HttpKernel\HttpKernel->handleRaw()
(vendor/symfony/http-kernel/HttpKernel.php:76)
at Symfony\Component\HttpKernel\HttpKernel->handle()
(vendor/symfony/http-kernel/Kernel.php:197)
at Symfony\Component\HttpKernel\Kernel->handle()
(public/index.php:42)