Warning: Constant ABSPATH already defined in D:\www\www800\workbook\wp-config.php on line 20

Fatal error: Uncaught Error: Call to undefined function get_magic_quotes_gpc() in D:\www\www800\workbook\wp-includes\load.php:651
Stack trace:
#0 D:\www\www800\workbook\wp-settings.php(333): wp_magic_quotes()
#1 D:\www\www800\workbook\wp-config.php(21): require_once('...')
#2 D:\www\www800\workbook\wp-load.php(37): require_once('...')
#3 D:\www\www800\workbook\wp-login.php(12): require('...')
#4 {main}
  thrown in D:\www\www800\workbook\wp-includes\load.php on line 651