Warning: Undefined array key "SESSION" in /customers/d/0/6/rydesater.se/httpd.www/skido/session.php on line 21

Fatal error: Uncaught Error: Undefined constant "counter" in /customers/d/0/6/rydesater.se/httpd.www/skido/session.php:4
Stack trace:
#0 /customers/d/0/6/rydesater.se/httpd.www/skido/loginut.php(3): include_once()
#1 {main}
  thrown in /customers/d/0/6/rydesater.se/httpd.www/skido/session.php on line 4