Fatal error: Uncaught TypeError: array_key_exists(): Argument #2 ($array) must be of type array, bool given

[Sanjeevsetu]

Fatal error: Uncaught TypeError: array_key_exists(): Argument #2 ($array) must be of type array, bool given in D:\XAMPP\htdocs\magazine3\wp-content\plugins\Easy-Table-of-Contents\includes\class.options.php:959 Stack trace: #0 D:\XAMPP\htdocs\magazine3\wp-content\plugins\Easy-Table-of-Contents\includes\inc.functions.php(98): ezTOC_Option::get('inline_css') #1 D:\XAMPP\htdocs\magazine3\wp-content\plugins\Easy-Table-of-Contents\easy-table-of-contents.php(140): require_once('D:\XAMPP\htdocs...') #2 D:\XAMPP\htdocs\magazine3\wp-content\plugins\Easy-Table-of-Contents\easy-table-of-contents.php(93): ezTOC::includes() #3 D:\XAMPP\htdocs\magazine3\wp-content\plugins\Easy-Table-of-Contents\easy-table-of-contents.php(1424): ezTOC::instance() #4 D:\XAMPP\htdocs\magazine3\wp-includes\class-wp-hook.php(308): ezTOC('') #5 D:\XAMPP\htdocs\magazine3\wp-includes\class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array) #6 D:\XAMPP\htdocs\magazine3\wp-includes\plugin.php(517): WP_Hook->do_action(Array) #7 D:\XAMPP\htdocs\magazine3\wp-settings.php(486): do_action('plugins_loaded') #8 D:\XAMPP\htdocs\magazine3\wp-config.php(98): require_once('D:\XAMPP\htdocs...') #9 D:\XAMPP\htdocs\magazine3\wp-load.php(50): require_once('D:\XAMPP\htdocs...') #10 D:\XAMPP\htdocs\magazine3\wp-admin\admin.php(34): require_once('D:\XAMPP\htdocs...') #11 {main} thrown in D:\XAMPP\htdocs\magazine3\wp-content\plugins\Easy-Table-of-Contents\includes\class.options.php on line 959