Update Fill.py

Co-authored-by: Exempt-Medic <[email protected]>

Fill.py

@@ -510,7 +510,7 @@ def mark_for_locking(location: Location):
             raise FillError(
                 f"Not enough locations for progression items. "
                 f"There are {len(progitempool)} more progression items than there are available locations.\n"
-                f"Unfilled locations: {multiworld.get_unfilled_locations()}.",
+                f"Unfilled locations:\n{multiworld.get_unfilled_locations()}.",
                 multiworld=multiworld,
             )
         accessibility_corrections(multiworld, multiworld.state, defaultlocations)