fix

LoadBalancer.py

@@ -239,7 +239,7 @@ class LoadBalancer:
         max_free_space = -1
         
         # Calculate free space for each instance
-        for instance_url, space_info in self.instance_health.items():
+        for instance_url, space_info in self.instances_health.items():
             total_space = self._convert_to_gb(space_info['total'])
             used_space = self._convert_to_gb(space_info['used'])
             free_space = total_space - used_space