Error message
Deprecated function: Creation of dynamic property Drupal\theme_per_user\Theme\ThemeSwitcher::$user_id is deprecated in Drupal\theme_per_user\Theme\ThemeSwitcher->applies() (line 82 of modules/contrib/theme_per_user/src/Theme/ThemeSwitcher.php).
Drupal\theme_per_user\Theme\ThemeSwitcher->applies(Object) (Line: 67)
Drupal\Core\Theme\ThemeNegotiator->determineActiveTheme(Object) (Line: 414)
Drupal\Core\Theme\ThemeManager->initTheme(Object) (Line: 95)
Drupal\Core\Theme\ThemeManager->getActiveTheme() (Line: 221)
Drupal\Core\Theme\Registry->init(NULL) (Line: 289)
Drupal\Core\Theme\Registry->getRuntime() (Line: 193)
Drupal\Core\Entity\EntityViewBuilder->getBuildDefaults(Object, 'full') (Line: 61)
Drupal\node\NodeViewBuilder->getBuildDefaults(Object, 'full') (Line: 157)
Drupal\Core\Entity\EntityViewBuilder->viewMultiple(Array, 'full', NULL) (Line: 123)
Drupal\Core\Entity\EntityViewBuilder->view(Object, 'full') (Line: 134)
Drupal\Core\Entity\Controller\EntityViewController->view(Object, 'full') (Line: 66)
Drupal\node\Controller\NodeViewController->view(Object, 'full', NULL)
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: 121)
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: 68)
Drupal\simple_oauth\HttpMiddleware\BasicAuthSwap->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: 191)
Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 53)
Asm89\Stack\Cors->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)