Fatal error: Uncaught Error: Class "WP_Block_Metadata_Registry" not found in /customers/5/6/a/learningarcticbiology.info/httpd.www/blog/wp-includes/blocks.php:391
Stack trace:
#0 /customers/5/6/a/learningarcticbiology.info/httpd.www/blog/wp-includes/blocks/index.php(172): wp_register_block_metadata_collection('/customers/5/6/...', '/customers/5/6/...')
#1 /customers/5/6/a/learningarcticbiology.info/httpd.www/blog/wp-includes/class-wp-hook.php(324): wp_register_core_block_metadata_collection('')
#2 /customers/5/6/a/learningarcticbiology.info/httpd.www/blog/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#3 /customers/5/6/a/learningarcticbiology.info/httpd.www/blog/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#4 /customers/5/6/a/learningarcticbiology.info/httpd.www/blog/wp-settings.php(700): do_action('init')
#5 /customers/5/6/a/learningarcticbiology.info/httpd.www/blog/wp-config.php(98): require_once('/customers/5/6/...')
#6 /customers/5/6/a/learningarcticbiology.info/httpd.www/blog/wp-load.php(50): require_once('/customers/5/6/...')
#7 /customers/5/6/a/learningarcticbiology.info/httpd.www/blog/wp-blog-header.php(13): require_once('/customers/5/6/...')
#8 /customers/5/6/a/learningarcticbiology.info/httpd.www/blog/index.php(17): require('/customers/5/6/...')
#9 {main}
  thrown in /customers/5/6/a/learningarcticbiology.info/httpd.www/blog/wp-includes/blocks.php on line 391