Warning: Use of undefined constant STDERR - assumed 'STDERR' (this will throw an Error in a future version of PHP) in C:\xampp\htdocs\vendor\guzzlehttp\guzzle\build\Burgomaster.php on line 115

Warning: fwrite() expects parameter 1 to be resource, string given in C:\xampp\htdocs\vendor\guzzlehttp\guzzle\build\Burgomaster.php on line 115

Warning: Use of undefined constant STDERR - assumed 'STDERR' (this will throw an Error in a future version of PHP) in C:\xampp\htdocs\vendor\guzzlehttp\guzzle\build\Burgomaster.php on line 115

Warning: fwrite() expects parameter 1 to be resource, string given in C:\xampp\htdocs\vendor\guzzlehttp\guzzle\build\Burgomaster.php on line 115

Warning: Use of undefined constant STDERR - assumed 'STDERR' (this will throw an Error in a future version of PHP) in C:\xampp\htdocs\vendor\guzzlehttp\guzzle\build\Burgomaster.php on line 115

Warning: fwrite() expects parameter 1 to be resource, string given in C:\xampp\htdocs\vendor\guzzlehttp\guzzle\build\Burgomaster.php on line 115

Fatal error: Uncaught RuntimeException: Error executing command: rm -rf C:\xampp\htdocs\vendor\guzzlehttp\guzzle\build/artifacts/staging : in C:\xampp\htdocs\vendor\guzzlehttp\guzzle\build\Burgomaster.php:214 Stack trace: #0 C:\xampp\htdocs\vendor\guzzlehttp\guzzle\build\Burgomaster.php(42): Burgomaster->exec('rm -rf C:\\xampp...') #1 C:\xampp\htdocs\vendor\guzzlehttp\guzzle\build\packager.php(6): Burgomaster->__construct('C:\\xampp\\htdocs...', 'C:\\xampp\\htdocs...') #2 {main} thrown in C:\xampp\htdocs\vendor\guzzlehttp\guzzle\build\Burgomaster.php on line 214