php database warning bool [duplicate] - php

Question

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Reference - What does this error mean in PHP?
(38 answers)
Why does this PDO statement silently fail?
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Duplicate This question has been answered, is not unique, and doesn’t differentiate itself from another question.
I have this warning, how do I fix it?
Notice: Trying to access array offset on value of type bool in C:\Program Files\Ampps\www\NodeMCU\read tag user data.php on line 17
Code
require 'database.php';
$id = null;
if ( !empty($_GET['id'])) {
$id = $_REQUEST['id'];
}
$pdo = Database::connect();
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$sql = "SELECT * FROM tb_nodemcu where id = ?";
$q = $pdo->prepare($sql);
$q->execute(array($id));
$data = $q->fetch(PDO::FETCH_ASSOC);
Database::disconnect();
$msg = null;
if (null==$data['name']) {
$msg = "The ID of your Card / KeyChain is not registered !!!";
$data['id']=$id;
$data['name']="--------";
$data['gender']="--------";
$data['email']="--------";
$data['mobile']="--------";
} else {
$msg = null;
}