Download the latest version of RebornRotations:
RebornRotations.dll
https://github.com/FFXIV-CombatReborn/RebornRotations/releases/latest/download/RebornRotations.dll
RebornRotations.pdb
https://github.com/FFXIV-CombatReborn/RebornRotations/releases/latest/download/RebornRotations.pdb