Unreal Engine 4.20

Hey, I have used Photon previously on 4.19 and recently tried compiling the
Photon-Unreal-SDK_DemoParticle-UE4.zip Project. Usual steps were taken but it won't compile. Unreal switched with 4.20 to vs17.
I have seen these Errors before, could compile still which isn't the case in 4.20.
What can I do?


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