I need some help after installing a third party theme I got this:
I've looked up for similar topics on the forum but since I'm a newbie I don't get exactly where to find and how to remove the 'after' attribute.
1 exception(s): Exception #0 (Magento\Framework\Config\Dom\ValidationException): Element 'referenceContainer', attribute 'after': The attribute 'after' is not allowed. Line: 723 Exception #0 (Magento\Framework\Config\Dom\ValidationException): Element 'referenceContainer', attribute 'after': The attribute 'after' is not allowed. Line: 723 #0 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/Config/Dom.php(115): Magento\Framework\Config\Dom->_initDom('__construct('createObject('Magento\\Framewo...', Array) #3 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/ObjectManager/ObjectManager.php(56): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->create('Magento\\Framewo...', Array) #4 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/Config/DomFactory.php(42): Magento\Framework\ObjectManager\ObjectManager->create('Magento\\Framewo...', Array) #5 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/View/Model/Layout/Update/Validator.php(141): Magento\Framework\Config\DomFactory->createDom(Array) #6 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/View/Model/Layout/Merge.php(461): Magento\Framework\View\Model\Layout\Update\Validator->isValid('_validateMergedLayout('LAYOUT_frontend...', '\n load(Array) #9 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/View/Layout/Builder.php(86): Magento\Framework\View\Model\Layout\Merge\Interceptor->load() #10 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/View/Layout/Builder.php(63): Magento\Framework\View\Layout\Builder->loadLayoutUpdates() #11 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/View/Layout.php(254): Magento\Framework\View\Layout\Builder->build() #12 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/View/Layout.php(875): Magento\Framework\View\Layout->build() #13 /opt/bitnami/apps/magento/htdocs/generated/code/Magento/Framework/View/Layout/Interceptor.php(414): Magento\Framework\View\Layout->getBlock('page_content_he...') #14 /opt/bitnami/apps/magento/htdocs/vendor/magento/module-cms/Helper/Page.php(171): Magento\Framework\View\Layout\Interceptor->getBlock('page_content_he...') #15 /opt/bitnami/apps/magento/htdocs/vendor/magento/module-cms/Controller/Index/Index.php(43): Magento\Cms\Helper\Page->prepareResultPage(Object(Magento\Cms\Controller\Index\Index\Interceptor), 'mimosa4') #16 /opt/bitnami/apps/magento/htdocs/generated/code/Magento/Cms/Controller/Index/Index/Interceptor.php(24): Magento\Cms\Controller\Index\Index->execute(NULL) #17 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/App/Action/Action.php(107): Magento\Cms\Controller\Index\Index\Interceptor->execute() #18 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\Action\Action->dispatch(Object(Magento\Framework\App\Request\Http)) #19 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Cms\Controller\Index\Index\Interceptor->___callParent('dispatch', Array) #20 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Cms\Controller\Index\Index\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http)) #21 /opt/bitnami/apps/magento/htdocs/generated/code/Magento/Cms/Controller/Index/Index/Interceptor.php(39): Magento\Cms\Controller\Index\Index\Interceptor->___callPlugins('dispatch', Array, Array) #22 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/App/FrontController.php(55): Magento\Cms\Controller\Index\Index\Interceptor->dispatch(Object(Magento\Framework\App\Request\Http)) #23 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\FrontController->dispatch(Object(Magento\Framework\App\Request\Http)) #24 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\FrontController\Interceptor->___callParent('dispatch', Array) #25 /opt/bitnami/apps/magento/htdocs/vendor/magento/module-store/App/FrontController/Plugin/RequestPreprocessor.php(94): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http)) #26 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/Interception/Interceptor.php(135): Magento\Store\App\FrontController\Plugin\RequestPreprocessor->aroundDispatch(Object(Magento\Framework\App\FrontController\Interceptor), Object(Closure), Object(Magento\Framework\App\Request\Http)) #27 /opt/bitnami/apps/magento/htdocs/vendor/magento/module-page-cache/Model/App/FrontController/BuiltinPlugin.php(73): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http)) #28 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/Interception/Interceptor.php(135): Magento\PageCache\Model\App\FrontController\BuiltinPlugin->aroundDispatch(Object(Magento\Framework\App\FrontController\Interceptor), Object(Closure), Object(Magento\Framework\App\Request\Http)) #29 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http)) #30 /opt/bitnami/apps/magento/htdocs/generated/code/Magento/Framework/App/FrontController/Interceptor.php(26): Magento\Framework\App\FrontController\Interceptor->___callPlugins('dispatch', Array, NULL) #31 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/App/Http.php(135): Magento\Framework\App\FrontController\Interceptor->dispatch(Object(Magento\Framework\App\Request\Http)) #32 /opt/bitnami/apps/magento/htdocs/generated/code/Magento/Framework/App/Http/Interceptor.php(24): Magento\Framework\App\Http->launch() #33 /opt/bitnami/apps/magento/htdocs/vendor/magento/framework/App/Bootstrap.php(256): Magento\Framework\App\Http\Interceptor->launch() #34 /opt/bitnami/apps/magento/htdocs/index.php(39): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor)) #35 {main}