Fatal error: Uncaught Error: Call to undefined function register_block_type() in /home/y/yaalmaqk/ar-knn.ru/public_html/wp-content/plugins/ninja-forms/blocks/bootstrap.php:21
Stack trace:
#0 [internal function]: Ninja_Forms::{closure}('')
#1 /home/y/yaalmaqk/ar-knn.ru/public_html/wp-includes/plugin.php(524): call_user_func_array(Object(Closure), Array)
#2 /home/y/yaalmaqk/ar-knn.ru/public_html/wp-settings.php(411): do_action('init')
#3 /home/y/yaalmaqk/ar-knn.ru/public_html/wp-config.php(92): require_once('/home/y/yaalmaq...')
#4 /home/y/yaalmaqk/ar-knn.ru/public_html/wp-load.php(39): require_once('/home/y/yaalmaq...')
#5 /home/y/yaalmaqk/ar-knn.ru/public_html/wp-blog-header.php(13): require_once('/home/y/yaalmaq...')
#6 /home/y/yaalmaqk/ar-knn.ru/public_html/index.php(17): require('/home/y/yaalmaq...')
#7 {main}
  thrown in /home/y/yaalmaqk/ar-knn.ru/public_html/wp-content/plugins/ninja-forms/blocks/bootstrap.php on line 21