Fatal error: Uncaught Error: Call to undefined function pcntl_signal() in /opt/lampp/htdocs/squidv2-stage-dea/vendor/symfony/process/Tests/NonStopableProcess.php:36 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/squidv2-stage-dea/vendor/symfony/process/Tests/NonStopableProcess.php on line 36