Getting an Error on learn.recorder.plot() in collaborative filtering

Hi,

I want to plot the learning rate with these commands

learn.lr_find()
learn.recorder.plot()

but I got this error

’EmbeddingDotBias’ object has no attribute 'plot’

I wonder if anyone know how to solve it as I can’t find it by searching the forums. I have imported modules in the colab the same as the guide in fastai doc. Thanks