AttributeError: 'ProbabilisticRetinaNet' object has no attribute 'loss_normalizer_momentum'

[CatOneTwo]

When I run the training script, I met the following error "AttributeError: 'ProbabilisticRetinaNet' object has no attribute 'loss_normalizer_momentum'". How do you fix this error, thank you!

[slippersman]

When I run the training script, I met the following error "AttributeError: 'ProbabilisticRetinaNet' object has no attribute 'loss_normalizer_momentum'". How do you fix this error, thank you!
hello！I met this error too, do you fix this error?

[Songyeyaosong]

When I run the training script, I met the following error "AttributeError: 'ProbabilisticRetinaNet' object has no attribute 'loss_normalizer_momentum'". How do you fix this error, thank you!
hello！I met this error too, do you fix this error?

Hello! And I met this too, could you tell me how can I fix it? Thank you!