Почему не отправляется форма?

"use strict"  document.addEventListener('DOMContentLoaded', function () {     const form = document.getElementById('form');     form.addEventListener('submit', formSend);      async function formSend(e) {         e.preventDefault();          let error = formValidate(form);          let formData = new FormData(form);                   if (error === 0) {             let response = await fetch('mail.php', {                 method: 'POST',                 body: formData             });             if (response.ok) {                 let result = await response.json();                 alert(result.message);                 formPreview.innerHTML = '';                 form.reset();                            } else {                 alert("Ошибка")                         }          }else{             alert ('Заполните обязательные поля')         }     }       function formValidate(form) {         let error = 0;         let formReq = document.querySelectorAll('._req');          for (let index = 0; index < formReq.length; index++) {             const input = formReq[index];             formRemoveError(input);              if (input.classList.contains('_email')) {                 if (emailTest(input)){                     formAddError(input);                     error++;                 }              } else if (input.getAttribute("type")==="checkbox" && input.checked === false) {                 formAddError(input);                 error++;             }else{                 if (input.value === '') {                     formAddError(input);                     error++;                 }             }         }         return error;     }     function formAddError(input) {         input.parentElement.classList.add('_error');         input.classList.add('_error');     }     function formRemoveError(input) {         input.parentElement.classList.remove('_error');         input.classList.remove('_error');     }  /* функция проверки емайл */     function emailTest(input) {         return !/^w+([.-]?w+)*@w+([.-]?w+)*(.w{2,8})+$/.test(input.value);     }        });

"use strict" document.addEventListener('DOMContentLoaded', function () { const form = document.getElementById('form'); form.addEventListener('submit', formSend); async function formSend(e) { e.preventDefault(); let error = formValidate(form); let formData = new FormData(form); if (error === 0) { let response = await fetch('mail.php', { method: 'POST', body: formData }); if (response.ok) { let result = await response.json(); alert(result.message); formPreview.innerHTML = ''; form.reset(); } else { alert("Ошибка") } }else{ alert ('Заполните обязательные поля') } } function formValidate(form) { let error = 0; let formReq = document.querySelectorAll('._req'); for (let index = 0; index < formReq.length; index++) { const input = formReq[index]; formRemoveError(input); if (input.classList.contains('_email')) { if (emailTest(input)){ formAddError(input); error++; } } else if (input.getAttribute("type")==="checkbox" && input.checked === false) { formAddError(input); error++; }else{ if (input.value === '') { formAddError(input); error++; } } } return error; } function formAddError(input) { input.parentElement.classList.add('_error'); input.classList.add('_error'); } function formRemoveError(input) { input.parentElement.classList.remove('_error'); input.classList.remove('_error'); } /* функция проверки емайл */ function emailTest(input) { return !/^w+([.-]?w+)*@w+([.-]?w+)*(.w{2,8})+$/.test(input.value); } });

<?php use PHPMailerPHPMailerPHPMailer; use PHPMailerPHPMailerException;   require 'phpmailer/src/Exception.php'; require 'phpmailer/src/PHPMailer.php';  $mail = new PHPMailer(true); $mail->CharSet = 'UTF-8'; $mail->setLanguage('ru', 'phpmailer/language/'); $mail->IsHTML(true);    $mail->setFrom('HPL');  $mail->addAddress('Andrey56.89@mail.ru');  $mail->Subject = 'У вас письмо!'   $body = '<h1>Заявка!</h1>';  if(trim(!empty($_POST['name']))){     $body.='<p><strong>Имя:</strong> '.$_POST['name']. '</p>'; } if(trim(!empty($_POST['phone']))){     $body.='<p><strong>Телефон:</strong>' .$_POST['phone']. '</p>'; } if(trim(!empty($_POST['email']))){     $body.='<p><strong>email:</strong>' .$_POST['email']. '</p>'; }  $mail->Body = $body;  if (!$mail->send()) {     $message = 'Ошибка' ; } else {     $message = 'Данные отправлены!'; }  $response = ['message' => $message];  header('Content-type: application/json'); echo json_encode($response); ?>

<?php use PHPMailerPHPMailerPHPMailer; use PHPMailerPHPMailerException; require 'phpmailer/src/Exception.php'; require 'phpmailer/src/PHPMailer.php'; $mail = new PHPMailer(true); $mail->CharSet = 'UTF-8'; $mail->setLanguage('ru', 'phpmailer/language/'); $mail->IsHTML(true); $mail->setFrom('HPL'); $mail->addAddress('Andrey56.89@mail.ru'); $mail->Subject = 'У вас письмо!' $body = '<h1>Заявка!</h1>'; if(trim(!empty($_POST['name']))){ $body.='<p><strong>Имя:</strong> '.$_POST['name']. '</p>'; } if(trim(!empty($_POST['phone']))){ $body.='<p><strong>Телефон:</strong>' .$_POST['phone']. '</p>'; } if(trim(!empty($_POST['email']))){ $body.='<p><strong>email:</strong>' .$_POST['email']. '</p>'; } $mail->Body = $body; if (!$mail->send()) { $message = 'Ошибка' ; } else { $message = 'Данные отправлены!'; } $response = ['message' => $message]; header('Content-type: application/json'); echo json_encode($response); ?>

.... $mail->IsHTML(true); $mail->SMTPDebug = 2; $mail->Debugoutput = function($str, $level) {     $GLOBALS['mail_debug'] .= "$level: $strn"; }; .... .... .... if (!$mail->send()) { $message = 'Ошибка' ; error_log($mail_debug); }

.... $mail->IsHTML(true); $mail->SMTPDebug = 2; $mail->Debugoutput = function($str, $level) { $GLOBALS['mail_debug'] .= "$level: $strn"; }; .... .... .... if (!$mail->send()) { $message = 'Ошибка' ; error_log($mail_debug); }