Laravel Queue Fails with signal 11 Symfony\Component\Process\Exception\ProcessSignaledException

I am creating a Laravel queue to process videos. When I run the command

php artisan queue:listen --queue=processVideo

I receive the error:

> [2019-01-26 01:13:06][5] Processing: App\Jobs\ProcessVideo
> 
>    Symfony\Component\Process\Exception\ProcessSignaledException  : The
> process has been signaled with signal "11".
> 
>   at /var/www/api/vendor/symfony/process/Process.php:426
>     422|             usleep(1000);
>     423|         }
>     424|
>     425|         if ($this->processInformation['signaled'] && $this->processInformation['termsig'] !== $this->latestSignal) {
>   > 426|             throw new ProcessSignaledException($this);
>     427|         }
>     428|
>     429|         return $this->exitcode;
>     430|     }
> 
>   Exception trace:
> 
>   1   Symfony\Component\Process\Process::wait()
>       /var/www/api/vendor/symfony/process/Process.php:235
> 
>   2   Symfony\Component\Process\Process::run(Object(Closure))
>       /var/www/api/vendor/laravel/framework/src/Illuminate/Queue/Listener.php:175

I cannot figure out what is going on. The only issue I can find is in /var/log/syslog where mbstring segfaults.

I am at my wits end and I could use some guidance/assistance, even just some direction.

via Chebli Mohamed