Warning: Undefined variable $link in /DISK2/WWW/kreteni.eu/k8/tz/funkce.php on line 139

Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, null given in /DISK2/WWW/kreteni.eu/k8/tz/funkce.php:139
Stack trace:
#0 /DISK2/WWW/kreteni.eu/k8/tz/funkce.php(139): mysqli_query(NULL, 'SELECT * FROM `...')
#1 /DISK2/WWW/kreteni.eu/k8/tz/faq.php(8): require('/DISK2/WWW/kret...')
#2 {main}
  thrown in /DISK2/WWW/kreteni.eu/k8/tz/funkce.php on line 139