Fatal error on activation

Hello,

Could not install your plugin : Fatal error: Uncaught TypeError: array_merge(): Argument #1 must be of type array, bool given in /home/cclga64/public_html/benedicte/wp-content/plugins/rich-reviews/lib/rich-reviews-options.php:42 Stack trace: #0 /home/cclga64/public_html/benedicte/wp-content/plugins/rich-reviews/lib/rich-reviews-options.php(42): array_merge() #1 /home/cclga64/public_html/benedicte/wp-content/plugins/rich-reviews/lib/rich-reviews-options.php(890): RR_OPTIONS->__construct() #2 /home/cclga64/public_html/benedicte/wp-content/plugins/rich-reviews/rich-reviews.php(97): include_once(‘/home/cclga64/p…’) #3 /home/cclga64/public_html/benedicte/wp-admin/includes/plugin.php(2314): include_once(‘/home/cclga64/p…’) #4 /home/cclga64/public_html/benedicte/wp-admin/plugins.php(192): plugin_sandbox_scrape() #5 {main} thrown in?/home/cclga64/public_html/benedicte/wp-content/plugins/rich-reviews/lib/rich-reviews-options.php?on line?42

The website uses blocksy theme, WP 6.2.2 and PHP8

Thanks for your help