Tensorflow 1 is unsupported in Colab

[gkep]

The very first cell in colab notebook gives this error.
"ValueError: Tensorflow 1 is unsupported in Colab.
Your notebook should be updated to use Tensorflow 2."

Is there a straightforward way to currently run this notebook in Colab?
Is there somewhere a new version coherent with Colab?

Ofc, the later cells invoking the model fails as well with errors like:
"ImportError: cannot import name 'convert_all_kernels_in_model' from 'keras.utils.layer_utils'"

Thank you in advance for help.