KeyError: "MaskRCNN: 'efficientformer_l1_feat is not in the models registry'"

[QiqLiang]

I want to use the efficientformer_l1 as backbone in the task of object detection for a single image.
I use the following code:

from mmdet.apis import init_detector, inference_detector config_file = "./configs/mask_rcnn_efficientformer_l1_fpn_1x_coco.py" checkpoint_file = "./checkpoints/efficientformer_l1_coco.pth" model = init_detector(config_file, checkpoint_file, device="cpu") img = "./dogs.jpg" result = inference_detector(model, img) model.show_result(img, result, model.CLASSES, out_file="result.jpg")

but it shows: KeyError: "MaskRCNN: 'efficientformer_l1_feat is not in the models registry'", what should I do? how can I add the efficientformer model in the registry? thanks for answering this question!!