plugin fatal error

I am getting this error whenever i am trying to activate the radix helper plugin.I am getting this error.

Fatal error: Uncaught Error: Class ‘Inc\Base\Activate’ not found in /var/www/html/wp-content/plugins/radix-helper/radix-helper.php:46 Stack trace: #0 /var/www/html/wp-includes/class-wp-hook.php(286): activate_radix_helper_plugin(”) #1 /var/www/html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(”, Array) #2 /var/www/html/wp-includes/plugin.php(465): WP_Hook->do_action(Array) #3 /var/www/html/wp-admin/plugins.php(177): do_action(‘activate_radix-…’) #4 {main} thrown in /var/www/html/wp-content/plugins/radix-helper/radix-helper.php on line 46

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