Fatal error: Uncaught Error: Undefined constant "STDERR" in C:\xampp\htdocs\sitka\tools\calls-api-check.php:71 Stack trace: #0 C:\xampp\htdocs\sitka\tools\calls-api-check.php(79): client('http://localhos...', '1001') #1 {main} thrown in C:\xampp\htdocs\sitka\tools\calls-api-check.php on line 71