运行demo的时候发现问题

[a741419244]

RuntimeError: Error(s) in loading state_dict for FCOSDetector: size mismatch for fcos_body.fpn.prj_5.weight: copying a param with shape torch.Size([256, 1024, 1, 1]) from checkpoint, the shape in current model is torch.Size([256, 2048, 1, 1]).