PHP 8.4 deprecations #93
Description
I've recently updated a project with the sumup sdk in it. On the latest version, I get the following deprecation warnings, about implicit nullable parameters:
SumUp\SumUp::getCustomService(): Implicitly marking parameter $accessToken as nullable is deprecated, the explicit nullable type must be used instead
This is one of the example. It would be best to do a sweep through the repository to fix this specific issue. As far as I have seen, it is the only deprecation warning.