Framework: [5.4] FatalThrowableError __clone method called on non-object

[tonystatic]

• Laravel Version: 5.4.26
• PHP Version: 7.1.5

Description:

In my project I have a service class (_ServerPushService_) for handling PUSH notifications with following methods:

/** @var ServerPushMessage|null */
protected $message = null;

/**
 * @param $message
 * @return $this
 */
public function setMessage($message)
{
    $this->message = $message;
    return $this;
}

/**
 * @param array|null $devices
 * @return $this
 */
public function sendAndroid(array $devices = null) { ... }

I'm using Laravel Notifications (which implement _ShouldQueue_ and use _Queueable_) and the custom Channel for them. In the Channel class (_ServerPushChannel_) I call methods of the service above like:

$this->pushService->setMessage($message)
                            ->sendAndroid($androidDevices);

$message is always a ServerPushMessage instance and $androidDevices is always an array. Notification is fired while scheduled console command is executed.

And it works perfectly on:

• development server with queues disabled (driver = sync)
• development server with queues enabled (driver = database)
• production server with queues disabled (driver = sync)

... but I doesn't work on:

• production server with queues enabled (driver = database)

It throws:

Symfony\Component\Debug\Exception\FatalThrowableError __clone method called on non-object 

    vendor/laravel/framework/src/Illuminate/Notifications/ChannelManager.php:57 Illuminate\Notifications\ChannelManager::sendNow
    vendor/laravel/framework/src/Illuminate/Notifications/SendQueuedNotifications.php:57 Illuminate\Notifications\SendQueuedNotifications::handle
    [internal] call_user_func_array
    vendor/laravel/framework/src/Illuminate/Container/Container.php:508 Illuminate\Container\Container::call
    vendor/laravel/framework/src/Illuminate/Bus/Dispatcher.php:94 Illuminate\Bus\Dispatcher::Illuminate\Bus\{closure}
    vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:151 Illuminate\Pipeline\Pipeline::Illuminate\Pipeline\{closure}
    vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:104 Illuminate\Pipeline\Pipeline::then
    vendor/laravel/framework/src/Illuminate/Bus/Dispatcher.php:98 Illuminate\Bus\Dispatcher::dispatchNow
    vendor/laravel/framework/src/Illuminate/Queue/CallQueuedHandler.php:47 Illuminate\Queue\CallQueuedHandler::call
    vendor/laravel/framework/src/Illuminate/Queue/Jobs/Job.php:73 Illuminate\Queue\Jobs\Job::fire
    vendor/laravel/framework/src/Illuminate/Queue/Worker.php:203 Illuminate\Queue\Worker::process
    vendor/laravel/framework/src/Illuminate/Queue/Worker.php:153 Illuminate\Queue\Worker::runNextJob
    vendor/laravel/framework/src/Illuminate/Queue/Worker.php:75 Illuminate\Queue\Worker::daemon
    vendor/laravel/framework/src/Illuminate/Queue/Console/WorkCommand.php:100 Illuminate\Queue\Console\WorkCommand::runWorker
    vendor/laravel/framework/src/Illuminate/Queue/Console/WorkCommand.php:84 Illuminate\Queue\Console\WorkCommand::fire
    [internal] call_user_func_array
    vendor/laravel/framework/src/Illuminate/Container/Container.php:508 Illuminate\Container\Container::call
    vendor/laravel/framework/src/Illuminate/Console/Command.php:169 Illuminate\Console\Command::execute
    vendor/symfony/console/Command/Command.php:261 Symfony\Component\Console\Command\Command::run
    vendor/laravel/framework/src/Illuminate/Console/Command.php:155 Illuminate\Console\Command::run
    vendor/symfony/console/Application.php:817 Symfony\Component\Console\Application::doRunCommand
    vendor/symfony/console/Application.php:185 Symfony\Component\Console\Application::doRun
    vendor/symfony/console/Application.php:116 Symfony\Component\Console\Application::run
    vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php:121 Illuminate\Foundation\Console\Kernel::handle
    artisan:35 [main]

Everything works perfectly when I turn off queues on my production server. The PHP version is identical on both servers.

_Thanks in advance (and sorry for my bad english)._

[themsaid]

While sending notifications to multiple notifiers Laravel clones the notification instance and sends a clone separately to each notifiable, the error shown here indicates that the notification instance sent is not an object, the issue doesn't have enough information for me to understand what's going on so you'll need to dig that yourself :)

Going to close the issue since it's not actually a bug, I suggest that you post on the forums and include the full code starting with how you send the notification, the notification channel, and the notification class, that way you can get help.