Fatal error: Call to undefined function pcntl_signal() in /var/www/html/dev/spa/vendor/symfony/process/Symfony/Component/Process/Tests/NonStopableProcess.php on line 29

Call Stack:
    0.0003     239112   1. {main}() /var/www/html/dev/spa/vendor/symfony/process/Symfony/Component/Process/Tests/NonStopableProcess.php:0