I recently moved from 2.0.x to 2.2.5 and the neptune callbacks now fail with:
“ModuleAttributeError: ‘Sequential’ object has no attribute ‘smooth_loss’”
it happens when the neptune callback tries to get “learn.smooth_loss”, (https://github.com/fastai/fastai/blob/master/fastai/callback/neptune.py#L52) it seem that this attribute does not exist at the time of the callback. But if I run the whole training without the neptune callback then the learn.smooth_loss is defined. Therefor I was suspecting that maybe the callback sequence changed.