Hi, I'm using 5e OGL character sheet and I'm setting up an Arcane Trickster Rogue. I've set the level to 3, and checked the Arcane Rogue option. This correctly sets up the spell slots, but when casting a spell with a save it always shows "Spell Save DC: 0". Am I missing something or is there an issue with the sheet? How can I get the correct Spell Save DC to show?