Error on activation

after activation, it broke website:

Warning: Undefined global variable $pagenow in /var/www/html/wp-content/plugins/stopbadbots/stopbadbots.php on line 104 Fatal error: Uncaught Error: Undefined constant "SECURE_AUTH_COOKIE" in /var/www/html/wp-includes/pluggable.php:1023 Stack trace: #0 /var/www/html/wp-includes/pluggable.php(779): wp_parse_auth_cookie(false, '') #1 /var/www/html/wp-includes/class-wp-hook.php(341): wp_validate_auth_cookie(false) #2 /var/www/html/wp-includes/plugin.php(205): WP_Hook->apply_filters(false, Array) #3 /var/www/html/wp-includes/user.php(3786): apply_filters('determine_curre…', false) #4 /var/www/html/wp-includes/pluggable.php(70): _wp_get_current_user() #5 /var/www/html/wp-includes/capabilities.php(914): wp_get_current_user() #6 /var/www/html/wp-content/plugins/stopbadbots/stopbadbots.php(2363): current_user_can('manage_options') #7 /var/www/html/wp-content/plugins/stopbadbots/stopbadbots.php(126): stopbadbots_check_wordpress_logged_in_cookie() #8 /var/www/html/wp-settings.php(491): include_once('/var/www/html/w…') #9 /var/www/html/wp-config.php(139): require_once('/var/www/html/w…') #10 /var/www/html/wp-load.php(50): require_once('/var/www/html/w…') #11 /var/www/html/wp-admin/admin.php(35): require_once('/var/www/html/w…') #12 /var/www/html/wp-admin/network/admin.php(13): require_once('/var/www/html/w…') #13 /var/www/html/wp-admin/network/plugins.php(11): require_once('/var/www/html/w…') #14 {main} thrown in /var/www/html/wp-includes/pluggable.php on line 1023 Fatal error: Uncaught Error: Undefined constant "SECURE_AUTH_COOKIE" in /var/www/html/wp-includes/pluggable.php:1023 Stack trace: #0 /var/www/html/wp-includes/pluggable.php(779): wp_parse_auth_cookie(false, '') #1 /var/www/html/wp-includes/class-wp-hook.php(341): wp_validate_auth_cookie(false) #2 /var/www/html/wp-includes/plugin.php(205): WP_Hook->apply_filters(false, Array) #3 /var/www/html/wp-includes/user.php(3786): apply_filters('determine_curre…', false) #4 /var/www/html/wp-includes/pluggable.php(70): _wp_get_current_user() #5 /var/www/html/wp-includes/l10n.php(98): wp_get_current_user() #6 /var/www/html/wp-includes/l10n.php(153): get_user_locale() #7 /var/www/html/wp-includes/l10n.php(954): determine_locale() #8 /var/www/html/wp-includes/class-wp-fatal-error-handler.php(49): load_default_textdomain() #9 [internal function]: WP_Fatal_Error_Handler->handle() #10 {main} thrown in /var/www/html/wp-includes/pluggable.php on line 1023