TypeError thrown

Plugin could not be activated because it triggered a fatal error in a local site copy of a production site where the plugin works fine. Also in the local site it has worked well until I had to reinstall everything due to a XAMPP issue.
Twenty-one activated and all other plugin deactivated.

Error log:

Fatal error: Uncaught TypeError: array_key_exists(): Argument #2 ($array) must be of type array, bool given in C:\XAMPP\htdocs\testsite\wp-content\plugins\cookie-notice\cookie-notice.php:558 Stack trace: #0 C:\XAMPP\htdocs\testsite\wp-content\plugins\cookie-notice\cookie-notice.php(138): Cookie_Notice->check_legacy_params(false, Array) #1 C:\XAMPP\htdocs\testsite\wp-content\plugins\cookie-notice\cookie-notice.php(110): Cookie_Notice->__construct() #2 C:\XAMPP\htdocs\testsite\wp-content\plugins\cookie-notice\cookie-notice.php(679): Cookie_Notice::instance() #3 C:\XAMPP\htdocs\testsite\wp-content\plugins\cookie-notice\cookie-notice.php(684): Cookie_Notice() #4 C:\XAMPP\htdocs\testsite\wp-admin\includes\plugin.php(2286): include_once(‘C:\\XAMPP\\htdocs…’) #5 C:\XAMPP\htdocs\testsite\wp-admin\plugins.php(191): plugin_sandbox_scrape(‘cookie-notice/c…’) #6 {main} thrown in C:\XAMPP\htdocs\testsite\wp-content\plugins\cookie-notice\cookie-notice.php on line 558