I can run simple workflow

src/core/settings_management.py

@@ -87,7 +87,7 @@ class MemoryDbEngine:
     obj.update(items)
   
   def exists(self, user_id: str, entry: str):
-    return user_id in entry and entry in self.db[user_id]
+    return user_id in self.db and entry in self.db[user_id]
 
 
 class SettingsManager: