Setting memcached error

Fatal error: Uncaught Error: Redis::connect() expects parameter 2 to be int, string given in /domain/public/wp-content/plugins/cache-master/vendor/shieldon/simple-cache/src/SimpleCache/Driver/Redis.php on line 87 Call stack: Redis::connect() wp-content/plugins/cache-master/vendor/shieldon/simple-cache/src/SimpleCache/Driver/Redis.php:87 Shieldon\S\D\Redis::connect() wp-content/plugins/cache-master/vendor/shieldon/simple-cache/src/SimpleCache/Driver/Redis.php:64 Shieldon\S\D\Redis::__construct() wp-content/plugins/cache-master/vendor/shieldon/simple-cache/src/SimpleCache/Cache.php:53 Shieldon\SimpleCache\Cache::__construct() wp-content/plugins/cache-master/inc/admin/functions.php:173 scm_test_driver() wp-content/plugins/cache-master/inc/admin/views/option-advanced-cache-driver-redis.php:41 include() wp-content/plugins/cache-master/inc/admin/functions.php:32 scm_load_view() wp-content/plugins/cache-master/inc/admin/setting.php:206 {closure}() wp-admin/includes/template.php:1824 do_settings_fields() wp-admin/includes/template.php:1778 do_settings_sections() wp-content/plugins/cache-master/inc/admin/views/page-settings-page.php:117 include() wp-content/plugins/cache-master/inc/admin/functions.php:32 scm_load_view() wp-content/plugins/cache-master/inc/admin/menu.php:81 scm_options_page() wp-includes/class-wp-hook.php:310 WP_Hook::apply_filters() wp-includes/class-wp-hook.php:334 WP_Hook::do_action() wp-includes/plugin.php:517 do_action() wp-admin/admin.php:259 I set up memcached with information: Host: 127.0.0.1 Port: 11211 Save and bing. It threw error.