Fatal error: Uncaught Aws\Exception\CredentialsException: Error retrieving credentials from the instance profile metadata service. (Server error: `GET http://169.254.169.254/latest/meta-data/iam/security-credentials/` resulted in a `503 Service Unavailable` response: <?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://ww (truncated...) ) in /var/www/html/fwr/vendor/aws/aws-sdk-php/src/Credentials/InstanceProfileProvider.php:242 Stack trace: #0 /var/www/html/fwr/vendor/aws/aws-sdk-php/src/Credentials/InstanceProfileProvider.php(134): Aws\Credentials\InstanceProfileProvider->handleRetryableException(Object(GuzzleHttp\Exception\ServerException), Array, 'Error retrievin...') #1 [internal function]: Aws\Credentials\InstanceProfileProvider->Aws\Credentials\{closure}() #2 /var/www/html/fwr/vendor/guzzlehttp/promises/src/Coroutine.php(160): Generator->throw(Object(GuzzleHttp\Exception\ServerException)) #3 /var/www/html/fwr/vendor/guzzlehttp/promises/src/Promise.php in /var/www/html/fwr/vendor/aws/aws-sdk-php/src/Credentials/InstanceProfileProvider.php on line 242