Warning: Illegal string offset 'remember' in /www/wp-includes/user.php on line 41

Warning: Cannot assign an empty string to a string offset in /www/wp-includes/user.php on line 41

Warning: Illegal string offset 'user_login' in /www/wp-includes/user.php on line 56

Fatal error: Uncaught Error: Cannot create references to/from string offsets in /www/wp-includes/user.php:56
Stack trace:
#0 /www/wp-login.php(806): wp_signon('', '')
#1 {main}
  thrown in /www/wp-includes/user.php on line 56