Redo fix. Fix for actions structure to not error out when asking for next_id when the actions list is empty.

structures.py

@@ -19,10 +19,16 @@ class KoboldStoryRegister(collections.OrderedDict):
         return self.popitem()[1]
     
     def get_first_key(self) -> int:
-        return next(iter(self))
+        if len(self) == 0:
+            return -1
+        else:
+            return next(iter(self))
 
     def get_last_key(self) -> int:
-        return next(reversed(self))
+        if len(self) == 0:
+            return -1
+        else:
+            return next(reversed(self))
 
     def __getitem__(self, k: int) -> str:
         return super().__getitem__(k)