Just Updated to the latest version and getting zillions of errors around SuppProtoCertCentre after this:
{ V8.57 certificate supplier protocol, determines which functions are used to get certificates }
TSupplierProto = (SuppProtoNone, SuppProtoOwnCA, SuppProtoAcmeV2); { V8.62 Acmev1 gone }
// SuppProtoCertCentre, SuppProtoServtas); { V9.5 CertCentre gone, Servtas never supported }
It's referenced in a lot of places.
I was probably just unlucky enough to Update in between things, but just in case nobody noticed this, thought I'd report it here anyway...