Genesis Blocks: Call to undefined function add_action()

I had Genesis Blocks Version 1.3.0 installed
probably because of it there was a 500 script error

just appeared on the site in both browsers
the site takes an INCREDIBLY long time to load and then this:

504 Gateway Timeout
nginx/1.20.2

just worked.
AND ADMIN IS LOADING NORM

it means the site script has gone into a loop

I created GUTHENBERG blocks in the admin panel TODAY ALL DAY
well the DB became a little more. but it’s not DB.

Viewing the Query Log on hosting

[Wed Apr 27 21:42:26.726309 2022] [cgi:error] [pid 4912] [client 192.168.1.1:55110] AH01215: PHP Parse error: syntax error, unexpected ‘:’, expecting ‘{‘ in /var/www/u7439/data/www/themes-wp.ru/wp-content/plugins/genesis-blocks/genesis-blocks.php on line 23: /var/www/php-bin-isp-php56/u7439/php

and many such similar errors

23 – first line in code:

function genesis_blocks_load(): void {
	$context = [
		'url'     => plugin_dir_url( __FILE__ ),
		'path'    => plugin_dir_path( __FILE__ ),
		'version' => get_file_data( __FILE__, [ 'Version' ] )[0],
		'theme'   => sanitize_title( get_stylesheet() ),
	];

	( new Genesis\Blocks\PluginLoader( $context ) )->init();
}
add_action( 'plugins_loaded', 'genesis_blocks_load' );

it could be a php version error

i updated the plugin
Genesis Blocks Version 1.4.0
and the error has changed
[Wed Apr 27 21:45:36.202906 2022] [cgi:error] [pid 6097] [client 195.211.23.207:56242] AH01215: PHP Fatal error: Uncaught Error: Call to undefined function add_action() in /var/www/u7439/data/www/themes-wp.ru/wp-content/plugins/genesis-blocks/genesis-blocks.php:33: /var/www/php-bin-isp-php74/u7439/php

33 – last line in code:

function genesis_blocks_load(): void {
	$context = [
		'url'     => plugin_dir_url( __FILE__ ),
		'path'    => plugin_dir_path( __FILE__ ),
		'version' => get_file_data( __FILE__, [ 'Version' ] )[0],
		'theme'   => sanitize_title( get_stylesheet() ),
	];

	( new Genesis\Blocks\PluginLoader( $context ) )->init();
}
add_action( 'plugins_loaded', 'genesis_blocks_load' );

add_action() is a basic WP function
I don’t know how it can be that the php file with the necessary include is missing.
can we assume that the /wp-content/plugins/genesis-blocks/genesis-blocks.php file is included before the WP core?

of course you can write
if (function_exists("add_action")) add_action( 'plugins_loaded', 'genesis_blocks_load' );
but that’s probably wrong?

PHP Version normal
https://www.ads-software.com/plugins/genesis-blocks/

Genesis Blocks 1.4.0
PHP Version: 7.1 or higher

used for site – CGI 7.4.28 (alt) and WordPress 5.6.5