Warning: Undefined global variable $_SESSION in /suede33/www/lib/config.php on line 32

Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /suede33/www/lib/config.php:32
Stack trace:
#0 /suede33/www/html_head.php(7): include()
#1 /suede33/www/member_join.php(3): include('/suede33/www/ht...')
#2 {main}
  thrown in /suede33/www/lib/config.php on line 32