Update solver.py

solver.py

@@ -50,7 +50,7 @@ class TimetableSolver:
             from objective_engine import ObjectiveEngine
             self.objective_engine = ObjectiveEngine(
                 model=self.model,
-                constraint_engine=self.constraint_engine,
+                ce=self.constraint_engine,
                 tasks=self.tasks, faculties=self.faculties,
                 sections=self.sections, rooms=self.rooms,
                 weights=soft_constraint_weights