问为什么我的addEventListener单击事件只触发一次？

EN

<form name="GPT3commentForm" id="GPT3commentForm" display="none" action="/insert_GPT3.php" method="post" autocomplete="off">
<input type="hidden" name="GPT3_field1" id="GPT3Text"/></form>

<?php
    require_once './includes/Openai.php';
    $openai = New Openai();
    //Engine, prompt and max tokens - takes the last entry of the database array as the prompt
    $openai->request("davinci", end($stack), 100);
    $latestEntry = end($stack);
    $latestEntry = JSON_encode($latestEntry);
?>

<script>
var data = <?php echo json_encode($response, JSON_HEX_TAG); ?>; // Don't forget the extra semicolon!
//turn the string into an object
const dataObj = JSON.parse(data);
console.log(typeof dataObj);
//access only the text completion section...
console.log(dataObj.choices[0].text);
GPT3Array = [];
newData = [];
newDataObj = [];
currentGPT3Text = 0;
GPT3Array[currentGPT3Text] = dataObj.choices[0].text;
document.getElementById('GPT3Text').value = GPT3Array[currentGPT3Text];
const GPT3symbolSpan = document.createElement("span");
const GPT3link = document.createElement("a");
GPT3link.textContent = GPT3Array[currentGPT3Text];
GPT3symbolSpan.appendChild(GPT3link);
GPT3LoadingText.appendChild(GPT3symbolSpan);
document.getElementById('GPT3commentForm').submit();

var generateText = function (event) {
    currentGPT3Text += 1;
    <?php
        require_once './includes/Openai.php';
        $new_openai = New Openai();
        //Engine, prompt and max tokens - takes the last entry of the database array as the prompt
        $new_openai->request("davinci", end($stack), 100);
        $latestEntry = end($stack);
        $latestEntry = JSON_encode($latestEntry);
        //unset($new_openai);
        //unset($latestEntry);        
    ?>

    //make newData and newDataObj an array to make this work...
    newData[currentGPT3Text] = <?php echo json_encode($response, JSON_HEX_TAG); ?>;
    newDataObj[currentGPT3Text] = JSON.parse(newData[currentGPT3Text]);
    GPT3Array[currentGPT3Text] = newDataObj[currentGPT3Text].choices[0].text;
    document.getElementById('GPT3Text').value = GPT3Array[currentGPT3Text];
    document.getElementById('GPT3commentForm').submit();
    GPT3link.textContent = GPT3Array[currentGPT3Text];
    console.log(currentGPT3Text);
    console.log(GPT3Array[currentGPT3Text]);
}

// GPT3LoadingText.onclick = generateText;
document.getElementById('loading-screen').addEventListener('click', generateText, {once: false}); 
</script>

<?php
$username = "************";
$password = "************";
$database = "************";

$mysqli = new mysqli("************", $username, $password, $database);

// Don't forget to properly escape your values before you send them to DB
// to prevent SQL injection attacks.

$GPT3_field2 = $mysqli->real_escape_string($_POST['GPT3_field1']);

$query = "INSERT INTO comments (comment)
            VALUES ('{$GPT3_field2}')";

$mysqli->query($query);
?>

<?php
$query = $mysqli->query("SELECT * FROM comments");

$query = "SELECT * FROM comments";

if ($result = $mysqli->query($query)) {
    /* fetch associative array */
    while ($row = $result->fetch_assoc()) {
        $field1name = $row["comments"];
    }
    /* free result set */
    $result->free();
}?>

<?php
$username = "************";
$password = "************";
$database = "************";
$mysqli = new mysqli("***********", $username, $password, $database);
$query = "SELECT * FROM comments";
echo '<table border="0" cellspacing="2" cellpadding="2"> 
    <tr> 
        <td> <font face="Arial">Username</font> </td> 
        <td> <font face="Arial">GPT3_field1</font> </td> 
    </tr>';

if ($result = $mysqli->query($query)) {
    while ($row = $result->fetch_assoc()) {
        $field1name = $row["GPT3_field1"];
        echo '<tr> 
                <td>'.$field1name.'</td> 
            </tr>';
    }
    $result->free();
} 

$mysqli->close();?>