FatalThrowableError: Call to a member function broadcastOn() on null in

[bobper]

[2018-04-10 09:35:38] local.ERROR: Symfony\Component\Debug\Exception\FatalThrowableError: Call to a member function broadcastOn() on null in /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Broadcasting/BroadcastEvent.php:47
Stack trace:
#0 [internal function]: Illuminate\Broadcasting\BroadcastEvent->handle(Object(Illuminate\Broadcasting\Broadcasters\PusherBroadcaster))
#1 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(29): call_user_func_array(Array, Array)
#2 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(87): Illuminate\Container\BoundMethod::Illuminate\Container{closure}()
#3 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(31): Illuminate\Container\BoundMethod::callBoundMethod(Object(Illuminate\Foundation\Application), Array, Object(Closure))
#4 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Container/Container.php(539): Illuminate\Container\BoundMethod::call(Object(Illuminate\Foundation\Application), Array, Array, NULL)
#5 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Bus/Dispatcher.php(94): Illuminate\Container\Container->call(Array)
#6 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(114): Illuminate\Bus\Dispatcher->Illuminate\Bus{closure}(Object(Illuminate\Broadcasting\BroadcastEvent))
#7 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(102): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline{closure}(Object(Illuminate\Broadcasting\BroadcastEvent))
#8 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Bus/Dispatcher.php(98): Illuminate\Pipeline\Pipeline->then(Object(Closure))
#9 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Queue/CallQueuedHandler.php(42): Illuminate\Bus\Dispatcher->dispatchNow(Object(Illuminate\Broadcasting\BroadcastEvent), false)
#10 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Queue/Jobs/Job.php(69): Illuminate\Queue\CallQueuedHandler->call(Object(Illuminate\Queue\Jobs\RedisJob), Array)
#11 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Queue/Worker.php(317): Illuminate\Queue\Jobs\Job->fire()
#12 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Queue/Worker.php(267): Illuminate\Queue\Worker->process('redis', Object(Illuminate\Queue\Jobs\RedisJob), Object(Illuminate\Queue\WorkerOptions))
#13 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Queue/Worker.php(224): Illuminate\Queue\Worker->runJob(Object(Illuminate\Queue\Jobs\RedisJob), 'redis', Object(Illuminate\Queue\WorkerOptions))
#14 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Queue/Console/WorkCommand.php(101): Illuminate\Queue\Worker->runNextJob('redis', 'default', Object(Illuminate\Queue\WorkerOptions))
#15 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Queue/Console/WorkCommand.php(85): Illuminate\Queue\Console\WorkCommand->runWorker('redis', 'default')
#16 [internal function]: Illuminate\Queue\Console\WorkCommand->fire()
#17 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(29): call_user_func_array(Array, Array)
#18 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(87): Illuminate\Container\BoundMethod::Illuminate\Container{closure}()
#19 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(31): Illuminate\Container\BoundMethod::callBoundMethod(Object(Illuminate\Foundation\Application), Array, Object(Closure))
#20 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Container/Container.php(539): Illuminate\Container\BoundMethod::call(Object(Illuminate\Foundation\Application), Array, Array, NULL)
#21 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Console/Command.php(182): Illuminate\Container\Container->call(Array)
#22 /home/vagrant/Code/skull/vendor/symfony/console/Command/Command.php(264): Illuminate\Console\Command->execute(Object(Symfony\Component\Console\Input\ArgvInput), Object(Illuminate\Console\OutputStyle))
#23 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Console/Command.php(167): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Illuminate\Console\OutputStyle))
#24 /home/vagrant/Code/skull/vendor/symfony/console/Application.php(888): Illuminate\Console\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#25 /home/vagrant/Code/skull/vendor/symfony/console/Application.php(224): Symfony\Component\Console\Application->doRunCommand(Object(Illuminate\Queue\Console\WorkCommand), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#26 /home/vagrant/Code/skull/vendor/symfony/console/Application.php(125): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#27 /home/vagrant/Code/skull/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php(122): Symfony\Component\Console\Application->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#28 /home/vagrant/Code/skull/artisan(35): Illuminate\Foundation\Console\Kernel->handle(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#29 {main}