"Warning: array_flip() in EntityStorageBase::loadMultiple() Skipping Non-Scalar Values" [#3470143]

Steps to reproduce

Install and enable the CAPTCHA module along with any custom modules that interact with entity loading.
Warning: array_flip(): Can only flip string and integer values, entry skipped in Drupal\Core\Entity\EntityStorageBase->loadMultiple() (line 278 of /var/www/alien/web/core/lib/Drupal/Core/Entity/EntityStorageBase.php)
#0 /var/www/alien/web/core/includes/bootstrap.inc(166): _drupal_error_handler_real()
#1 [internal function]: _drupal_error_handler()
#2 /var/www/alien/web/core/lib/Drupal/Core/Entity/EntityStorageBase.php(278): array_flip()
#3 /var/www/alien/web/core/lib/Drupal/Core/Entity/EntityStorageBase.php(262): Drupal\Core\Entity\EntityStorageBase->loadMultiple()
#4 /var/www/alien/web/core/lib/Drupal/Core/Entity/EntityBase.php(503): Drupal\Core\Entity\EntityStorageBase->load()
#5 /var/www/alien/web/modules/contrib/captcha/captcha.module(60): Drupal\Core\Entity\EntityBase::load()
#6 /var/www/alien/web/core/lib/Drupal/Core/Entity/EntityStorageBase.php(400): captcha_point_load()
#7 /var/www/alien/web/core/lib/Drupal/Core/Extension/ModuleHandler.php(395): Drupal\Core\Entity\EntityStorageBase->Drupal\Core\Entity\{closure}()
#8 /var/www/alien/web/core/lib/Drupal/Core/Entity/EntityStorageBase.php(399): Drupal\Core\Extension\ModuleHandler->invokeAllWith()
#9 /var/www/alien/web/core/lib/Drupal/Core/Entity/EntityStorageBase.php(319): Drupal\Core\Entity\EntityStorageBase->postLoad()
#10 /var/www/alien/web/core/lib/Drupal/Core/Entity/EntityStorageBase.php(262): Drupal\Core\Entity\EntityStorageBase->loadMultiple()
#11 /var/www/alien/web/modules/user_ip_block/src/Plugin/Block/UserIpBlock.php(79): Drupal\Core\Entity\EntityStorageBase->load()
#12 /var/www/alien/web/core/modules/block/src/BlockViewBuilder.php(171): Drupal\user_ip_block\Plugin\Block\UserIpBlock->build()
#13 [internal function]: Drupal\block\BlockViewBuilder::preRender()
#14 /var/www/alien/web/core/lib/Drupal/Core/Security/DoTrustedCallbackTrait.php(113): call_user_func_array()
#15 /var/www/alien/web/core/lib/Drupal/Core/Render/Renderer.php(870): Drupal\Core\Render\Renderer->doTrustedCallback()
#16 /var/www/alien/web/core/lib/Drupal/Core/Render/Renderer.php(432): Drupal\Core\Render\Renderer->doCallback()
#17 /var/www/alien/web/core/lib/Drupal/Core/Render/Renderer.php(504): Drupal\Core\Render\Renderer->doRender()
#18 /var/www/alien/web/core/lib/Drupal/Core/Render/Renderer.php(248): Drupal\Core\Render\Renderer->doRender()
#19 /var/www/alien/web/core/lib/Drupal/Core/Template/TwigExtension.php(475): Drupal\Core\Render\Renderer->render()
#20 /var/www/alien/web/sites/default/files/php/twig/66cb090736493_unlock:page-navigation_450X_Z6zbrelmpr7GASGv1DzK/-swVntUx4_Xu5tdM-2Fpr5f7Wil28grjMlOvBUI-z7I.php(189): Drupal\Core\Template\TwigExtension->escapeFilter()
#21 /var/www/alien/vendor/twig/twig/src/Template.php(430): __TwigTemplate_be053de9272053c8d88ae1c5e34adb7a___122589939->block_left()
#22 /var/www/alien/web/sites/default/files/php/twig/66cb090736493_unlock:navbar_Zy5dGqehtCEfmPja1rrT_dpUE/5HeSkKPX5UjHqzNb5qHDFznEAEVtgxMS_hZXg0vAu-8.php(113): Twig\Template->yieldBlock()
#23 /var/www/alien/vendor/twig/twig/src/Extension/CoreExtension.php(1775): __TwigTemplate_7b7d54de3180007a9a0da5296065ee8a->{closure}()
#24 /var/www/alien/web/sites/default/files/php/twig/66cb090736493_unlock:navbar_Zy5dGqehtCEfmPja1rrT_dpUE/5HeSkKPX5UjHqzNb5qHDFznEAEVtgxMS_hZXg0vAu-8.php(48): Twig\Extension\CoreExtension::captureOutput()
#25 /var/www/alien/vendor/twig/twig/src/Template.php(360): __TwigTemplate_7b7d54de3180007a9a0da5296065ee8a->doDisplay()
#26 /var/www/alien/web/sites/default/files/php/twig/66cb090736493_unlock:page-navigation_450X_Z6zbrelmpr7GASGv1DzK/-swVntUx4_Xu5tdM-2Fpr5f7Wil28grjMlOvBUI-z7I.php(156): Twig\Template->yield()
#27 /var/www/alien/vendor/twig/twig/src/Template.php(360): __TwigTemplate_be053de9272053c8d88ae1c5e34adb7a___122589939->doDisplay()
#28 /var/www/alien/web/sites/default/files/php/twig/66cb090736493_unlock:page-navigation_450X_Z6zbrelmpr7GASGv1DzK/-swVntUx4_Xu5tdM-2Fpr5f7Wil28grjMlOvBUI-z7I.php(49): Twig\Template->yield()
#29 /var/www/alien/vendor/twig/twig/src/Extension/CoreExtension.php(1775): __TwigTemplate_be053de9272053c8d88ae1c5e34adb7a->{closure}()
#30 /var/www/alien/web/sites/default/files/php/twig/66cb090736493_unlock:page-navigation_450X_Z6zbrelmpr7GASGv1DzK/-swVntUx4_Xu5tdM-2Fpr5f7Wil28grjMlOvBUI-z7I.php(44): Twig\Extension\CoreExtension::captureOutput()
#31 /var/www/alien/vendor/twig/twig/src/Template.php(360): __TwigTemplate_be053de9272053c8d88ae1c5e34adb7a->doDisplay()
#32 /var/www/alien/web/sites/default/files/php/twig/66cb090736493_unlock:page_PeXGpwF7iibf2QMOgJDiMNYnl/0NGowMcD-aTHYQNaI1PCHqSVskPbtDaYrrJbGvExVEw.php(85): Twig\Template->yield()
#33 /var/www/alien/vendor/twig/twig/src/Template.php(430): __TwigTemplate_680348dcba4ed711166674a04d696208->block_page_navigation()
#34 /var/www/alien/web/sites/default/files/php/twig/66cb090736493_unlock:page_PeXGpwF7iibf2QMOgJDiMNYnl/0NGowMcD-aTHYQNaI1PCHqSVskPbtDaYrrJbGvExVEw.php(59): Twig\Template->yieldBlock()
#35 /var/www/alien/vendor/twig/twig/src/Template.php(360): __TwigTemplate_680348dcba4ed711166674a04d696208->doDisplay()
#36 /var/www/alien/web/sites/default/files/php/twig/66cb090736493_page--front.html.twig_DJ5CuyKbGGGJmYHDsIAWxqZO7/IxsEDUpMprrBvltYYU1azx0mTP3FGITIM1kgHiYbGyo.php(41): Twig\Template->yield()
#37 /var/www/alien/vendor/twig/twig/src/Template.php(360): __TwigTemplate_3d3dcd1793dc2ad2fe091523724d47d4->doDisplay()
#38 /var/www/alien/vendor/twig/twig/src/Template.php(335): Twig\Template->yield()
#39 /var/www/alien/vendor/twig/twig/src/TemplateWrapper.php(38): Twig\Template->render()
#40 /var/www/alien/web/core/themes/engines/twig/twig.engine(33): Twig\TemplateWrapper->render()
#41 /var/www/alien/web/core/lib/Drupal/Core/Theme/ThemeManager.php(348): twig_render_template()
#42 /var/www/alien/web/core/lib/Drupal/Core/Render/Renderer.php(491): Drupal\Core\Theme\ThemeManager->render()
#43 /var/www/alien/web/core/lib/Drupal/Core/Render/Renderer.php(248): Drupal\Core\Render\Renderer->doRender()
#44 /var/www/alien/web/core/lib/Drupal/Core/Template/TwigExtension.php(475): Drupal\Core\Render\Renderer->render()
#45 /var/www/alien/web/sites/default/files/php/twig/66cb090736493_radix:html_3rZqnvBlS7ZnKg7cw2LRqDQ61/vsBZ_-enXbHokEVRpZqQ6HvGUEzqpavn07SFyO36bCk.php(112): Drupal\Core\Template\TwigExtension->escapeFilter()
#46 /var/www/alien/vendor/twig/twig/src/Extension/CoreExtension.php(1775): __TwigTemplate_d53b472f72c78071825dc73cfc9472f4->{closure}()
#47 /var/www/alien/web/sites/default/files/php/twig/66cb090736493_radix:html_3rZqnvBlS7ZnKg7cw2LRqDQ61/vsBZ_-enXbHokEVRpZqQ6HvGUEzqpavn07SFyO36bCk.php(48): Twig\Extension\CoreExtension::captureOutput()
#48 /var/www/alien/vendor/twig/twig/src/Template.php(360): __TwigTemplate_d53b472f72c78071825dc73cfc9472f4->doDisplay()
#49 /var/www/alien/web/sites/default/files/php/twig/66cb090736493_html.html.twig_hvTwIRFjyhXAxrpPPwE0fPZVR/h6FnOLBOPeOL-spTxEUL-T9Y7SZX0WSwWqAiFzyVQzY.php(40): Twig\Template->yield()
#50 /var/www/alien/vendor/twig/twig/src/Template.php(360): __TwigTemplate_58cf615195f937651f10d519f4137ee4->doDisplay()
#51 /var/www/alien/vendor/twig/twig/src/Template.php(335): Twig\Template->yield()
#52 /var/www/alien/vendor/twig/twig/src/TemplateWrapper.php(38): Twig\Template->render()
#53 /var/www/alien/web/core/themes/engines/twig/twig.engine(33): Twig\TemplateWrapper->render()
#54 /var/www/alien/web/core/lib/Drupal/Core/Theme/ThemeManager.php(348): twig_render_template()
#55 /var/www/alien/web/core/lib/Drupal/Core/Render/Renderer.php(491): Drupal\Core\Theme\ThemeManager->render()
#56 /var/www/alien/web/core/lib/Drupal/Core/Render/Renderer.php(248): Drupal\Core\Render\Renderer->doRender()
#57 /var/www/alien/web/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(158): Drupal\Core\Render\Renderer->render()
#58 /var/www/alien/web/core/lib/Drupal/Core/Render/Renderer.php(638): Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}()
#59 /var/www/alien/web/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(153): Drupal\Core\Render\Renderer->executeInRenderContext()
#60 /var/www/alien/web/core/lib/Drupal/Core/EventSubscriber/MainContentViewSubscriber.php(90): Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse()
#61 [internal function]: Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray()
#62 /var/www/alien/web/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php(111): call_user_func()
#63 /var/www/alien/vendor/symfony/http-kernel/HttpKernel.php(186): Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch()
#64 /var/www/alien/vendor/symfony/http-kernel/HttpKernel.php(76): Symfony\Component\HttpKernel\HttpKernel->handleRaw()
#65 /var/www/alien/web/core/lib/Drupal/Core/StackMiddleware/Session.php(53): Symfony\Component\HttpKernel\HttpKernel->handle()
#66 /var/www/alien/web/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(48): Drupal\Core\StackMiddleware\Session->handle()
#67 /var/www/alien/web/core/lib/Drupal/Core/StackMiddleware/ContentLength.php(28): Drupal\Core\StackMiddleware\KernelPreHandle->handle()
#68 /var/www/alien/web/core/modules/big_pipe/src/StackMiddleware/ContentLength.php(32): Drupal\Core\StackMiddleware\ContentLength->handle()
#69 /var/www/alien/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(106): Drupal\big_pipe\StackMiddleware\ContentLength->handle()
#70 /var/www/alien/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(85): Drupal\page_cache\StackMiddleware\PageCache->pass()
#71 /var/www/alien/web/core/modules/ban/src/BanMiddleware.php(50): Drupal\page_cache\StackMiddleware\PageCache->handle()
#72 /var/www/alien/web/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(48): Drupal\ban\BanMiddleware->handle()
#73 /var/www/alien/web/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(51): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle()
#74 /var/www/alien/web/core/lib/Drupal/Core/StackMiddleware/AjaxPageState.php(36): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle()
#75 /var/www/alien/web/modules/contrib/remove_http_headers/src/StackMiddleware/RemoveHttpHeadersMiddleware.php(49): Drupal\Core\StackMiddleware\AjaxPageState->handle()
#76 /var/www/alien/web/core/lib/Drupal/Core/StackMiddleware/StackedHttpKernel.php(51): Drupal\remove_http_headers\StackMiddleware\RemoveHttpHeadersMiddleware->handle()
#77 /var/www/alien/web/core/lib/Drupal/Core/DrupalKernel.php(741): Drupal\Core\StackMiddleware\StackedHttpKernel->handle()
#78 /var/www/alien/web/index.php(19): Drupal\Core\DrupalKernel->handle()
#79 {main}