I had code to programmatically render a block.
$block = \Drupal\block\Entity\Block::load('bartik_search');
$block_content = \Drupal::entityManager()
->getViewBuilder('block')
->view($block);
return array('#markup' => drupal_render($block_content));
After updating to Drupal 8.2.x, I get the following error:
Recoverable fatal error: Argument 1 passed to Drupal\block\BlockViewBuilder::view() must implement interface
How do I fix this error?