Warning: require(C:\mywamp\sites\allsite\calcomposer\vendor\symfony\process/vendor/autoload.php): Failed to open stream: No such file or directory in C:\mywamp\sites\allsite\calcomposer\vendor\symfony\process\Tests\ErrorProcessInitiator.php on line 17

Fatal error: Uncaught Error: Failed opening required 'C:\mywamp\sites\allsite\calcomposer\vendor\symfony\process/vendor/autoload.php' (include_path='.;C:\php\pear') in C:\mywamp\sites\allsite\calcomposer\vendor\symfony\process\Tests\ErrorProcessInitiator.php:17 Stack trace: #0 {main} thrown in C:\mywamp\sites\allsite\calcomposer\vendor\symfony\process\Tests\ErrorProcessInitiator.php on line 17