PHPMailer error: Undefined property: PHPMailer\PHPMailer\Exception::$getMessage - php

Question

Need some help with PHPMailer code. I made a contact form with SMTP, and when i submit the vaules, i get this error:
Undefined property: PHPMailer\PHPMailer\Exception::$getMessage in C:\xampp\htdocs\contact\mail.php on line 32
What is the wrong?
Here is the php code:
<?php
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;
require_once 'PHPMailer/src/Exception.php';
require_once 'PHPMailer/src/PHPMailer.php';
require_once 'PHPMailer/src/SMTP.php';
$mail = new PHPMailer (true);
$alert = '';
if (isset($_POST['submit'])) {
$name = $_POST['name'];
$email = $_POST['email'];
$subject = $_POST['subject'];
$message = $_POST['message'];
try{
$mail->isSMTP();
$mail->Host = 'smtp.gmail.com';
$mail->SMTPAuth = true;
$mail->Username = 'myEmail#gmail.com';
$mail ->Password = 'appPassword';
$mail->SMTPSecure = "tls";
$mail->Port = '587';
$mail->setFrom( 'myEmail#gmail.com');
$mail->addAddress('myEmail#gmail.com');
$mail->isHTML (true);
$mail->Subject = 'Message Received from Contact: ' . $name;
$mail->Body = "Name: $name <br>Email: $email<br>Subject: $subject<br>Message: $message";
$mail->send();
$alert= "<div class='alert-success'><span>Message Sent! Thanks for contact us.</span></div>";
} catch (Exception $e) {
$alert = "<div class='alert-error'><span>' . $e->getMessage().'</span></div>";
}
}
?>
Here's the form code so you have it:
<form name="form1" method="post">
<div class="row">
<div class="col-md-6">
<div class="form-group">
<input type="text" class="form-control input-lg" name="name" id="name" placeholder="Enter name" required="required" />
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<input type="email" class="form-control input-lg" name="email" id="email" placeholder="Enter email" required="required" />
</div>
</div>
</div>
<div class="row">
<div class="col-md-12">
<div class="form-group">
<input type="text" class="form-control input-lg" name="subject" id="subject" placeholder="Subject" required="required" />
</div>
</div>
</div>
<div class="col-md-12"><?php echo $alert; ?></div>
<div class="row">
<div class="col-md-12">
<div class="form-group">
<textarea name="message" id="message" class="form-control" rows="4" cols="25" required="required" placeholder="Message" style="height: 170px;"></textarea>
</div>
<button type="submit" class="btn btn-skin btn-block" name="submit" id="submitcontact">Submit</button>
</div>
</div>
</form>
</div>
</div>
</div>

Answer 1

You have a semantics error. You started a string with a single quote and you closed it with a double quote. Be sure to start and end each string with the same type of quote.
change this
$alert = "<div class='alert-error'><span>' . $e->getMessage().'</span></div>";
to this
$alert = "<div class='alert-error'><span>" . $e->getMessage()."</span></div>";

Answer 2

You got your quotes in your alert message wrong. Change this line:
$alert = "<div class='alert-error'><span>' . $e->getMessage().'</span></div>";
to this:
$alert = '<div class="alert-error"><span>' . $e->getMessage(). '</span></div>';