Social 11.1.x - social_landing_page yields an only flip STRING and INTEGER values! in Drupal\Core\Entity\EntityStorageBase->loadMultiple

Problem/Motivation

Warning: array_flip(): Can only flip STRING and INTEGER values! in Drupal\Core\Entity\EntityStorageBase->loadMultiple() (line 261 of social-11.1.x/html/core/lib/Drupal/Core/Entity/EntityStorageBase.php) #0 social-11.1.x/html/core/includes/bootstrap.inc(312): _drupal_error_handler_real()
#1 [internal function]: _drupal_error_handler()
#2 social-11.1.x/html/core/lib/Drupal/Core/Entity/EntityStorageBase.php(261): array_flip()
#3 social-11.1.x/html/core/lib/Drupal/Core/Entity/EntityStorageBase.php(245): Drupal\Core\Entity\EntityStorageBase->loadMultiple()
#4 social-11.1.x/html/profiles/contrib/social/modules/social_features/social_landing_page/social_landing_page.module(376): Drupal\Core\Entity\EntityStorageBase->load()
#5 social-11.1.x/html/core/lib/Drupal/Core/Extension/ModuleHandler.php(539): social_landing_page_theme_suggestions_page_alter()
#6 social-11.1.x/html/modules/contrib/preprocess/src/PreprocessManager.php(72): Drupal\Core\Extension\ModuleHandler->alter()
#7 social-11.1.x/html/modules/contrib/preprocess/src/PreprocessManager.php(82): Drupal\preprocess\PreprocessManager->getSuggestions()
#8 social-11.1.x/html/modules/contrib/preprocess/preprocess.module(23): Drupal\preprocess\PreprocessManager->preprocess()
#9 social-11.1.x/html/core/lib/Drupal/Core/Theme/ThemeManager.php(287): preprocess_preprocess()
#10 social-11.1.x/html/core/lib/Drupal/Core/Render/Renderer.php(436): Drupal\Core\Theme\ThemeManager->render()
#11 social-11.1.x/html/core/lib/Drupal/Core/Render/Renderer.php(201): Drupal\Core\Render\Renderer->doRender()
#12 social-11.1.x/html/core/lib/Drupal/Core/Template/TwigExtension.php(450): Drupal\Core\Render\Renderer->render()
#13 social-11.1.x/html/sites/dev3.amplifyimpact.io/files/php/twig/622cd926c7533_html.html.twig_TxxYj72WBg3NWaRynTDyLPxik/a-EimmCnMc8ciprhq-I_MC-SGL-Ps5Iew8nRWMvZsOo.php(106): Drupal\Core\Template\TwigExtension->escapeFilter()
#14 social-11.1.x/vendor/twig/twig/src/Template.php(405): __TwigTemplate_f3113a4779c18e1eff92f04d4a3549e284fca1bf80cf1073bd78b6c750186606->doDisplay()
#15 social-11.1.x/vendor/twig/twig/src/Template.php(378): Twig\Template->displayWithErrorHandling()
#16 social-11.1.x/vendor/twig/twig/src/Template.php(390): Twig\Template->display()
#17 social-11.1.x/html/core/themes/engines/twig/twig.engine(65): Twig\Template->render()
#18 social-11.1.x/html/core/lib/Drupal/Core/Theme/ThemeManager.php(384): twig_render_template()
#19 social-11.1.x/html/core/lib/Drupal/Core/Render/Renderer.php(436): Drupal\Core\Theme\ThemeManager->render()
#20 social-11.1.x/html/core/lib/Drupal/Core/Render/Renderer.php(201): Drupal\Core\Render\Renderer->doRender()
#21 social-11.1.x/html/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(162): Drupal\Core\Render\Renderer->render()
#22 social-11.1.x/html/core/lib/Drupal/Core/Render/Renderer.php(578): Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}()
#23 social-11.1.x/html/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(163): Drupal\Core\Render\Renderer->executeInRenderContext()
#24 social-11.1.x/html/core/lib/Drupal/Core/EventSubscriber/MainContentViewSubscriber.php(90): Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse()
#25 [internal function]: Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray()
#26 social-11.1.x/html/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php(142): call_user_func()
#27 social-11.1.x/vendor/symfony/http-kernel/HttpKernel.php(163): Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch()
#28 social-11.1.x/vendor/symfony/http-kernel/HttpKernel.php(80): Symfony\Component\HttpKernel\HttpKernel->handleRaw()
#29 social-11.1.x/html/core/lib/Drupal/Core/StackMiddleware/Session.php(57): Symfony\Component\HttpKernel\HttpKernel->handle()
#30 social-11.1.x/html/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(47): Drupal\Core\StackMiddleware\Session->handle()
#31 social-11.1.x/html/core/modules/page_cache/src/StackMiddleware/PageCache.php(106): Drupal\Core\StackMiddleware\KernelPreHandle->handle()
#32 social-11.1.x/html/core/modules/page_cache/src/StackMiddleware/PageCache.php(85): Drupal\page_cache\StackMiddleware\PageCache->pass()
#33 social-11.1.x/html/core/modules/ban/src/BanMiddleware.php(50): Drupal\page_cache\StackMiddleware\PageCache->handle()
#34 social-11.1.x/html/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(47): Drupal\ban\BanMiddleware->handle()
#35 social-11.1.x/html/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(52): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle()
#36 social-11.1.x/vendor/stack/builder/src/Stack/StackedHttpKernel.php(23): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle()
#37 social-11.1.x/html/core/lib/Drupal/Core/EventSubscriber/DefaultExceptionHtmlSubscriber.php(166): Stack\StackedHttpKernel->handle()
#38 social-11.1.x/html/core/lib/Drupal/Core/EventSubscriber/DefaultExceptionHtmlSubscriber.php(122): Drupal\Core\EventSubscriber\DefaultExceptionHtmlSubscriber->makeSubrequest()
#39 social-11.1.x/html/core/lib/Drupal/Core/EventSubscriber/HttpExceptionSubscriberBase.php(109): Drupal\Core\EventSubscriber\DefaultExceptionHtmlSubscriber->on404()
#40 [internal function]: Drupal\Core\EventSubscriber\HttpExceptionSubscriberBase->onException()
#41 social-11.1.x/html/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php(142): call_user_func()
#42 social-11.1.x/vendor/symfony/http-kernel/HttpKernel.php(219): Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch()
#43 social-11.1.x/vendor/symfony/http-kernel/HttpKernel.php(91): Symfony\Component\HttpKernel\HttpKernel->handleThrowable()
#44 social-11.1.x/html/core/lib/Drupal/Core/StackMiddleware/Session.php(57): Symfony\Component\HttpKernel\HttpKernel->handle()
#45 social-11.1.x/html/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(47): Drupal\Core\StackMiddleware\Session->handle()
#46 social-11.1.x/html/core/modules/page_cache/src/StackMiddleware/PageCache.php(191): Drupal\Core\StackMiddleware\KernelPreHandle->handle()
#47 social-11.1.x/html/core/modules/page_cache/src/StackMiddleware/PageCache.php(128): Drupal\page_cache\StackMiddleware\PageCache->fetch()
#48 social-11.1.x/html/core/modules/page_cache/src/StackMiddleware/PageCache.php(82): Drupal\page_cache\StackMiddleware\PageCache->lookup()
#49 social-11.1.x/html/core/modules/ban/src/BanMiddleware.php(50): Drupal\page_cache\StackMiddleware\PageCache->handle()
#50 social-11.1.x/html/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(47): Drupal\ban\BanMiddleware->handle()
#51 social-11.1.x/html/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(52): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle()
#52 social-11.1.x/vendor/stack/builder/src/Stack/StackedHttpKernel.php(23): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle()
#53 social-11.1.x/html/core/lib/Drupal/Core/DrupalKernel.php(717): Stack\StackedHttpKernel->handle()
#54 social-11.1.x/html/index.php(19): Drupal\Core\DrupalKernel->handle()
#55 {main}.

Steps to reproduce

it is happening when cron is run.

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes