Methods computeMeanState() and computeOsculatingState() of FieldDSSTPropagator shall be statics
These methods shall be static in order to call them without having to instantiate a FieldDSSTPropagator object. They are static in the DSSTPropagator class.
This fix have to wait a major version.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information