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I can create/generate the .h File form the WSDL but when i try to create/generate the .cpp File I get the following error

Error 1 error PRJ0019: A tool returned an error code from "Performing Custom Build Step" ChargePointServer ChargePointServer

Why do I get this error??
I use the correct "solutionDir" because otherwise I won't be able to create/generate the .h File.

Any ideas/help ??