Warning: Trying to access array offset on value of type bool in /volume1/web/otryt/galeriaHT.php on line 20

Warning: Trying to access array offset on value of type bool in /volume1/web/otryt/galeriaHT.php on line 21

Fatal error: Uncaught DivisionByZeroError: Division by zero in /volume1/web/otryt/galeriaHT.php:24
Stack trace:
#0 {main}
  thrown in /volume1/web/otryt/galeriaHT.php on line 24