Null is not allowed

[cv65kr]

In the definition of function public static function getHeaders(mixed $headers, ?array $globals = null): array $globals allows to use null but parseHeaders ($headers = $h->parseHeaders($headers, $globals);) require array that's leads to issue

https://github.com/formancehq/formance-sdk-php/blob/main/src/Utils/Utils.php#L157

It should be
public static function getHeaders(mixed $headers, array $globals = []): array

[altitude]

Thanks for the heads up @cv65kr! Taking a look at this cc @Shiroy