Warning: Undefined array key "from" in D:\wwwroot\www.cuiyh1.cn\parse\play\index.php on line 41

Fatal error: Uncaught TypeError: count(): Argument #1 ($var) must be of type Countable|array, null given in D:\wwwroot\www.cuiyh1.cn\parse\play\index.php:41 Stack trace: #0 {main} thrown in D:\wwwroot\www.cuiyh1.cn\parse\play\index.php on line 41