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Warning: Undefined array key "language" in C:\xampp\htdocs\drop\bartz\drawmap.php on line 21

Fatal error: Uncaught Error: Call to undefined function mysql_num_rows() in C:\xampp\htdocs\drop\bartz\drawmap.php:36 Stack trace: #0 {main} thrown in C:\xampp\htdocs\drop\bartz\drawmap.php on line 36