Deprecated: json_decode(): Passing null to parameter #1 ($json) of type string is deprecated in D:\Server\ProjectJI\ServerDB\ReceiveChat.php on line 5

Deprecated: mysqli_real_escape_string(): Passing null to parameter #2 ($string) of type string is deprecated in D:\Server\ProjectJI\ServerDB\ReceiveChat.php on line 6

Fatal error: Uncaught TypeError: Unsupported operand types: string - string in D:\Server\ProjectJI\ServerDB\ReceiveChat.php:18 Stack trace: #0 {main} thrown in D:\Server\ProjectJI\ServerDB\ReceiveChat.php on line 18