Error: AttributeError: module 'mistune' has no attribute 'BlockGrammar'

If you're seeing the error AttributeError: module 'mistune' has no attribute 'BlockGrammar' it might be that you're still using the cell tags with your notebook. We recommend using valohai-utils instead to handle inputs and parameters with notebooks. 

For the latest jupyhai versions valohai-utils will be installed automatically so make sure you have updated it recently (pip install --upgrade jupyhai). 

If you can't update your jupyhai, you can always add !pip install valohai-utils at the first cell of your notebook.