Warning: Undefined array key "prof" in /home/mlochoq/www/drzewo.php on line 325

Fatal error: Uncaught TypeError: countNonZero(): Argument #1 ($sosa) must be of type array, null given, called in /home/mlochoq/www/drzewo.php on line 325 and defined in /home/mlochoq/www/drzewo.php:762 Stack trace: #0 /home/mlochoq/www/drzewo.php(325): countNonZero(NULL) #1 /home/mlochoq/www/index.php(111): displayDrzewo(857) #2 {main} thrown in /home/mlochoq/www/drzewo.php on line 762