ModuleNotFoundError: No module named 'keras.legacy_tf_layers' issue

[Silvia]

Hi there!
I've been encountering an error when I try to train the network!
I'm working with macOS M1. Up to the labelling phase, everything goes fine. Once I want to start the training network, this error appear on my terminal (pic attached):
"ModuleNotFoundError: No module named 'keras.legacy_tf_layers' issue"

I've already installed the keras and also tensorflow.
.
Thank you.