1 exception(s): Exception #0 (Exception): Item (Magento\Downloadable\Model\Link) with the same ID "8" already exists. Exception #0 (Exception): Item (Magento\Downloadable\Model\Link) with the same ID "8" already exists.
#1 Magento\Framework\Data\Collection\AbstractDb->loadWithFilter() called at [vendor/magento/framework/Data/Collection/AbstractDb.php:565]
#2 Magento\Framework\Data\Collection\AbstractDb->load() called at [vendor/magento/framework/Data/Collection.php:839]
#3 Magento\Framework\Data\Collection->getIterator() called at [vendor/magento/module-downloadable/Model/Product/Type.php:155]
#4 Magento\Downloadable\Model\Product\Type->getLinks() called at [vendor/magento/module-downloadable/Model/Product/Type.php:175]
#5 Magento\Downloadable\Model\Product\Type->hasLinks() called at [vendor/magento/module-downloadable/Model/Product/Type.php:336]
#6 Magento\Downloadable\Model\Product\Type->isSalable() called at [vendor/magento/module-catalog/Model/Product.php:1746]
#7 Magento\Catalog\Model\Product->isAvailable() called at [vendor/magento/module-catalog/Model/Product.php:1728]
#8 Magento\Catalog\Model\Product->isSalable() called at [vendor/magento/module-catalog/Model/Product.php:1785]
#9 Magento\Catalog\Model\Product->isSaleable() called at [vendor/magento/module-catalog/view/frontend/templates/product/list.phtml:84]
#10 include() called at [vendor/magento/framework/View/TemplateEngine/Php.php:71]
#11 Magento\Framework\View\TemplateEngine\Php->render() called at [vendor/magento/framework/View/Element/Template.php:273]
#12 Magento\Framework\View\Element\Template->fetchView() called at [vendor/magento/framework/View/Element/Template.php:303]
#13 Magento\Framework\View\Element\Template->_toHtml() called at [vendor/magento/framework/View/Element/AbstractBlock.php:1114]
#14 Magento\Framework\View\Element\AbstractBlock->Magento\Framework\View\Element\{closure}() called at [vendor/magento/framework/View/Element/AbstractBlock.php:1118]
#15 Magento\Framework\View\Element\AbstractBlock->_loadCache() called at [vendor/magento/framework/View/Element/AbstractBlock.php:678]
#16 Magento\Framework\View\Element\AbstractBlock->toHtml() called at [vendor/magento/framework/View/Layout.php:578]
#17 Magento\Framework\View\Layout->_renderBlock() called at [vendor/magento/framework/View/Layout.php:555]
#18 Magento\Framework\View\Layout->renderNonCachedElement() called at [vendor/magento/framework/View/Layout.php:510]
#19 Magento\Framework\View\Layout->renderElement() called at [vendor/magento/framework/View/Element/AbstractBlock.php:525]
#20 Magento\Framework\View\Element\AbstractBlock->getChildHtml() called at [vendor/magento/module-catalog/Block/Category/View.php:100]
#21 Magento\Catalog\Block\Category\View->getProductListHtml() called at [vendor/magento/module-catalog/view/frontend/templates/category/products.phtml:15]
#22 include() called at [vendor/magento/framework/View/TemplateEngine/Php.php:71]
#23 Magento\Framework\View\TemplateEngine\Php->render() called at [vendor/magento/framework/View/Element/Template.php:273]
#24 Magento\Framework\View\Element\Template->fetchView() called at [vendor/magento/framework/View/Element/Template.php:303]
#25 Magento\Framework\View\Element\Template->_toHtml() called at [vendor/magento/framework/View/Element/AbstractBlock.php:1114]
#26 Magento\Framework\View\Element\AbstractBlock->Magento\Framework\View\Element\{closure}() called at [vendor/magento/framework/View/Element/AbstractBlock.php:1118]
#27 Magento\Framework\View\Element\AbstractBlock->_loadCache() called at [vendor/magento/framework/View/Element/AbstractBlock.php:678]
#28 Magento\Framework\View\Element\AbstractBlock->toHtml() called at [vendor/magento/framework/View/Layout.php:578]
#29 Magento\Framework\View\Layout->_renderBlock() called at [vendor/magento/framework/View/Layout.php:555]
#30 Magento\Framework\View\Layout->renderNonCachedElement() called at [vendor/magento/framework/View/Layout.php:510]
#31 Magento\Framework\View\Layout->renderElement() called at [vendor/magento/framework/View/Layout.php:606]
#32 Magento\Framework\View\Layout->_renderContainer() called at [vendor/magento/framework/View/Layout.php:557]
#33 Magento\Framework\View\Layout->renderNonCachedElement() called at [vendor/magento/framework/View/Layout.php:510]
#34 Magento\Framework\View\Layout->renderElement() called at [vendor/magento/framework/View/Layout.php:606]
#35 Magento\Framework\View\Layout->_renderContainer() called at [vendor/magento/framework/View/Layout.php:557]
#36 Magento\Framework\View\Layout->renderNonCachedElement() called at [vendor/magento/framework/View/Layout.php:510]
#37 Magento\Framework\View\Layout->renderElement() called at [vendor/magento/framework/View/Layout.php:606]
#38 Magento\Framework\View\Layout->_renderContainer() called at [vendor/magento/framework/View/Layout.php:557]
#39 Magento\Framework\View\Layout->renderNonCachedElement() called at [vendor/magento/framework/View/Layout.php:510]
#40 Magento\Framework\View\Layout->renderElement() called at [vendor/magento/framework/View/Layout.php:606]
#41 Magento\Framework\View\Layout->_renderContainer() called at [vendor/magento/framework/View/Layout.php:557]
#42 Magento\Framework\View\Layout->renderNonCachedElement() called at [vendor/magento/framework/View/Layout.php:510]
#43 Magento\Framework\View\Layout->renderElement() called at [vendor/magento/framework/View/Layout.php:606]
#44 Magento\Framework\View\Layout->_renderContainer() called at [vendor/magento/framework/View/Layout.php:557]
#45 Magento\Framework\View\Layout->renderNonCachedElement() called at [vendor/magento/framework/View/Layout.php:510]
#46 Magento\Framework\View\Layout->renderElement() called at [vendor/magento/framework/View/Layout.php:606]
#47 Magento\Framework\View\Layout->_renderContainer() called at [vendor/magento/framework/View/Layout.php:557]
#48 Magento\Framework\View\Layout->renderNonCachedElement() called at [vendor/magento/framework/View/Layout.php:510]
#49 Magento\Framework\View\Layout->renderElement() called at [vendor/magento/framework/View/Layout.php:975]
#50 Magento\Framework\View\Layout->getOutput() called at [vendor/magento/framework/Interception/Interceptor.php:58]
#51 Magento\Framework\View\Layout\Interceptor->___callParent() called at [vendor/magento/framework/Interception/Interceptor.php:138]
#52 Magento\Framework\View\Layout\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#53 Magento\Framework\View\Layout\Interceptor->___callPlugins() called at [generated/code/Magento/Framework/View/Layout/Interceptor.php:41]
#54 Magento\Framework\View\Layout\Interceptor->getOutput() called at [vendor/magento/framework/View/Result/Page.php:260]
#55 Magento\Framework\View\Result\Page->render() called at [vendor/magento/framework/View/Result/Layout.php:171]
#56 Magento\Framework\View\Result\Layout->renderResult() called at [vendor/magento/framework/Interception/Interceptor.php:58]
#57 Magento\Framework\View\Result\Page\Interceptor->___callParent() called at [vendor/magento/framework/Interception/Interceptor.php:138]
#58 Magento\Framework\View\Result\Page\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#59 Magento\Framework\View\Result\Page\Interceptor->___callPlugins() called at [generated/code/Magento/Framework/View/Result/Page/Interceptor.php:23]
#60 Magento\Framework\View\Result\Page\Interceptor->renderResult() called at [vendor/magento/framework/App/Http.php:120]
#61 Magento\Framework\App\Http->launch() called at [vendor/magento/framework/App/Bootstrap.php:264]
#62 Magento\Framework\App\Bootstrap->run() called at [pub/index.php:100]