Sending temporary attachment to email not working in Laravel 5.8

I’m trying to send attachment from form input via Notification email but I keep getting “Serialization of ‘IlluminateHttpUploadedFile’ is not allowed” error.

This is my controller function:

* @param InterviewRequest $request
* @return $this|IlluminateHttpRedirectResponse|IlluminateRoutingRedirector
public function interviewPost(InterviewRequest $request)
$contactForm = $request->all();
$contactForm['country_code'] = config('country.code');
$contactForm['country_name'] = config('');
$contactForm = ArrayHelper::toObject($contactForm);

if ($request->hasFile('filename')) {
$contactForm->filename = $request->file('filename');

// Send Contact Email
if (config('')) {
Notification::route('mail', config(''))->notify(new InterviewSent($contactForm));

This is my Notification function:

* @param mixed $notifiable
* @return IlluminateNotificationsMessagesMailMessage
public function toMail($notifiable)
$mailMessage = (new MailMessage)
->replyTo($this->msg->email, $this->msg->name)
->subject(trans('mail.contact_form_title', ['country' => $this->msg->country_name, 'appName' => config('')]))
->line(t('Country') . ': <a href="' . lurl('/?d=' . $this->msg->country_code) . '">' . $this->msg->country_name . '</a>')
->line(t('Name') . ': ' . $this->msg->name);

if (isset($this->msg->email) && $this->msg->email!='') {
$mailMessage->line(t('Email Address') . ': ' . $this->msg->email);

if (isset($this->msg->phone) && $this->msg->phone!='') {
$mailMessage->line(t('Phone Number') . ': ' . $this->msg->phone);

if (isset($this->msg->filename) && (!empty($filename))) {
return $mailMessage->attachData(
'mime' => $this->msg->filename->getMimeType(),

return $mailMessage;

I also tried to use the attach() method but it’s still the same result.

from Newest questions tagged laravel-5 – Stack Overflow

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