Warning: count(): Parameter must be an array or an object that implements Countable in ... /wp-content/plugins/hypermarket-plus/includes/classes/hypermarket-plus-homepage-control.php on line 129
The fix was released shortly after this report.
See this topic for reference.
You can update the plugin automatically via the admin panel providing you have activated a valid license key.
My php version is 7.3.......
and there is no error when I change to 5.6. However, this plugin prompts in wordpress: php version above 7.3 is required.
Is WordPress debugging mode enabled in your wp-config.php file? If so, you need to disable this since it is not recommended to use WP_DEBUG or the other debug tools on production/live sites.