diff --git a/main.py b/main.py
index c0a9ec6..523e88f 100644
--- a/main.py
+++ b/main.py
@@ -156,6 +156,7 @@ async def fastapi_run_project(network: str) -> str:
         raise HTTPException(status_code=409, detail="is in simulation")   
 
     app.state.lock_simulation = True
+    print('lock simulation')
     result = run_project(network)
     app.state.lock_simulation = False
     return result