I guess I forgot primaryAbility.

src/main/java/org/misoenergy/hackday/kessel_run/class_definitions/CharacterClass.java

@@ -13,6 +13,7 @@ import java.util.Map;
 public class CharacterClass {
     private String name;
     private String summary;
+    private String primaryAbility;
     private String flavorText;
     private String creatingText;
     private String quickBuildText;