Fatal error: Uncaught Error: Call to undefined function is_wp_error() in /home/.sites/501/site1636/web/wp2/wp-includes/load.php:398 Stack trace: #0 /home/.sites/501/site1636/web/wp2/wp-settings.php(110): wp_set_wpdb_vars() #1 /home/.sites/501/site1636/web/wp2/wp-config.php(16): require_once('/home/.sites/50...') #2 /home/.sites/501/site1636/web/wp2/wp-load.php(37): require_once('/home/.sites/50...') #3 /home/.sites/501/site1636/web/wp2/wp-login.php(12): require('/home/.sites/50...') #4 {main} thrown in /home/.sites/501/site1636/web/wp2/wp-includes/load.php on line 398