Error when activating

Fatal error: Uncaught Error: Call to a member function set_block() on null in /home/cv_gutenberg/gutenberg.dev/wp-content/plugins/advanced-gutenberg-blocks/classes/Helpers/Extend.php:47 Stack trace: #0 /home/cv_gutenberg/gutenberg.dev/wp-content/plugins/advanced-gutenberg-blocks/classes/Blocks/Plugin.php(25): AdvancedGutenbergBlocks\Helpers\Extend::register_block(‘advanced-gutenb…’, ‘WordPress Plugi…’, Array) #1 /home/cv_gutenberg/gutenberg.dev/wp-content/plugins/advanced-gutenberg-blocks/classes/AdvancedGutenbergBlocks.php(95): AdvancedGutenbergBlocks\Blocks\Plugin->run() #2 /home/cv_gutenberg/gutenberg.dev/wp-content/plugins/advanced-gutenberg-blocks/plugin.php(23): AdvancedGutenbergBlocks\AdvancedGutenbergBlocks->run() #3 /home/cv_gutenberg/gutenberg.dev/wp-admin/includes/plugin.php(1897): include(‘/home/cv_gutenb…’) #4 /home/cv_gutenberg/gutenberg.dev/wp-admin/plugins.php(172): plugin_sandbox_scrape(‘advanced-gutenb…’) #5 {main} th in /home/cv_gutenberg/gutenberg.dev/wp-content/plugins/advanced-gutenberg-blocks/classes/Helpers/Extend.php on line 47