Drupal8,
Windows 8

Installation was normal without any issues
Second hit shows this error.

The website encountered an unexpected error. Please try again later.
Recoverable fatal error: Argument 1 passed to twig_init() must be an instance of Drupal\Core\Extension\Extension, array given in twig_init() (line 34 of core\themes\engines\twig\twig.engine).

twig_init(Array)
call_user_func('twig_init', Array) (Line: 137)

Comments

alexask’s picture

twig_init(Array)
call_user_func('twig_init', Array) (Line: 137)
Drupal\Core\Theme\ThemeInitialization->loadActiveTheme(Object) (Line: 67)
Drupal\Core\Theme\ThemeInitialization->initTheme('bartik') (Line: 406)
Drupal\Core\Theme\ThemeManager->initTheme(NULL) (Line: 96)
Drupal\Core\Theme\ThemeManager->getActiveTheme() (Line: 43)
Drupal\Core\Cache\Context\ThemeCacheContext->getContext(NULL) (Line: 119)
Drupal\Core\Cache\Context\CacheContextsManager->convertTokensToKeys(Array) (Line: 307)
Drupal\Core\Render\RenderCache->createCacheID(Array) (Line: 66)
Drupal\Core\Render\RenderCache->get(Array) (Line: 104)
Drupal\Core\Render\PlaceholderingRenderCache->get(Array) (Line: 263)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 195)
Drupal\Core\Render\Renderer->render(Array, ) (Line: 226)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 572)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 227)
Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 117)
Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object) (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch('kernel.view', Object) (Line: 144)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 62)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 57)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 98)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 77)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 50)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 626)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

aalin’s picture

it starts working again after drush cr, after few clicks the same error ...
Drupal 8.2.3, fresh install, selected theme: seven
If I change the base theme for Seven from classy to stable then the problem seems to be fixed. So the problem seems to be when base theme has another base theme