Hello, same error for me :
PHP v8.1.26
composer v2.6.6
Drupal v10.2.2
Civic theme v1.6.2
Components v3-beta
The website encountered an unexpected error. Try again later.
Drupal\Component\Plugin\Exception\PluginNotFoundException: The "civictheme_one_column" plugin does not exist. Valid plugin IDs for Drupal\Core\Layout\LayoutPluginManager are: layout_twocol_section, layout_threecol_section, layout_fourcol_section, layout_onecol, layout_twocol, layout_twocol_bricks, layout_threecol_25_50_25, layout_threecol_33_34_33, layout_builder_blank in Drupal\Core\Plugin\DefaultPluginManager->doGetDefinition() (line 53 of core/lib/Drupal/Component/Plugin/Discovery/DiscoveryTrait.php).
Drupal\Core\Plugin\DefaultPluginManager->getDefinition('civictheme_one_column') (Line: 169)
Drupal\layout_builder\Section->getDefaultRegion() (Line: 239)
Drupal\layout_builder\Entity\LayoutBuilderEntityViewDisplay->getDefaultRegion() (Line: 168)
Drupal\Core\Entity\EntityDisplayBase->init() (Line: 153)
Drupal\Core\Entity\EntityDisplayBase->__construct(Array, 'entity_view_display') (Line: 181)
Drupal\Core\Entity\Entity\EntityViewDisplay->__construct(Array, 'entity_view_display') (Line: 48)
Drupal\layout_builder\Entity\LayoutBuilderEntityViewDisplay->__construct(Array, 'entity_view_display') (Line: 418)
Drupal\Core\Entity\EntityStorageBase->mapFromStorageRecords(Array) (Line: 41)
Drupal\layout_builder\Entity\LayoutBuilderEntityViewDisplayStorage->mapFromStorageRecords(Array) (Line: 424)
Drupal\Core\Config\Entity\ConfigEntityStorage->_doCreateFromStorageRecord(Array) (Line: 399)
Drupal\Core\Config\Entity\ConfigEntityStorage->createFromStorageRecord(Array) (Line: 386)
Drupal\Core\Config\ConfigInstaller->createConfiguration('', Array) (Line: 149)
Drupal\Core\Config\ConfigInstaller->installDefaultConfig('theme', 'civictheme') (Line: 75)
Drupal\Core\ProxyClass\Config\ConfigInstaller->installDefaultConfig('theme', 'civictheme') (Line: 244)
Drupal\Core\Extension\ThemeInstaller->install(Array) (Line: 141)
Drupal\system\Controller\ThemeController->install(Object)
call_user_func_array(Array, Array) (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 627)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 124)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 181)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)