can not change the encoder of UNet

[juju904]

Hi, Thanks for your amazing work.
When retraining the model,I changed the encoder of UNet from vgg to resnet,the following error occurred.What is the reason?How to solve it?

[Vincentqyw]

same issue, do you solve it?

[juju904]

same issue, do you solve it?

It still hasn't been solved. Have you solved it?