Laravel-邮递员返回错误500内部服务器错误

Question

我尝试根据异常类型返回错误消息：

我的App \ Exception \ Handler.php中有以下代码：

<?php

$stmt = $db->prepare("SELECT T1.N1 AS T1_N1, T1.N2 AS T1_N2, T2.N1 AS T2_N1, T2.N2 AS T2_N2, T3.N1 AS T3_N1, T3.N2 AS T3_N2
    FROM T1
    INNER JOIN T3 ON T1.idT1 = T3.idT1
    INNER JOIN T2 ON T3.idT2 = T2.idT2
");

if ($result = $stmt->execute()) {
    $arr = $result->fetchArray();
    foreach ($arr as &$row) {
      echo "1 : " .  $row["T1_N1"] . "<br>";
      echo "2 : " .  $row["T1_N2"] . "<br>";
      echo "3 : " .  $row["T2_N1"] . "<br>";
      echo "4 : " .  $row["T2_N2"] . "<br>";
      echo "5 : " .  $row["T3_N1"] . "<br>";
      echo "6 : " .  $row["T3_N2"] . "<br>"; 

    }
}

我的文件App \ Traits \ ApiResponser中有以下代码：

Iterator

当我尝试返回不存在的用户时，我在邮递员中有此提示：

但是我应该在json中收到此错误消息：

“不存在特定的使用权”