Fatal error: Uncaught Error: Call to undefined function pcntl_signal() in C:\mywamp\sites\allsite\calcomposer\vendor\symfony\process\Tests\NonStopableProcess.php:36 Stack trace: #0 {main} thrown in C:\mywamp\sites\allsite\calcomposer\vendor\symfony\process\Tests\NonStopableProcess.php on line 36