diff --git a/app/services/solver_sandbox.py b/app/services/solver_sandbox.py
index 05693dc..c9b41a6 100644
--- a/app/services/solver_sandbox.py
+++ b/app/services/solver_sandbox.py
@@ -14,7 +14,8 @@ from pulp import LpProblem, LpVariable, LpInteger, LpMinimize, LpMaximize, LpAff
 from services.loft_service import LoftService
 
 class SolverSandbox:
-    def loft_service(body):
+    def loft_service():
+        body = {}
         LoftService(body).process()
 
     def yosh_loop():