3-OASW_for_concept_drift_detection

When I run this code, the following error occurs.
![image](https://github.com/Western-OC2-Lab/OASW-Concept-Drift-Detection-and-Adaptation/assets/114545948/ec84e645-da5e-46b9-b7e0-0cedb84da4e0)
![image](https://github.com/Western-OC2-Lab/OASW-Concept-Drift-Detection-and-Adaptation/assets/114545948/5add05a7-396b-4db6-8397-9fd67420dcfb)
Can you help me with it？


Best Wishes！