Code snippet that can be used to render block in node.twig.html in drupal 8.
<?php
/**
* @param $variables
*/
function mymodule_preprocess_node(&$variables) {
$block = \Drupal\block\Entity\Block::load('ID_OF_YOUR_BLOCK');
$block_content = \Drupal::entityTypeManager()
->getViewBuilder('block')
->view($block);
$variables['myblock'] = $block_content;
}
and then to display block in node, juste use {{ myblock }} in your node.html.twig.
