Missing Hassio tab after upgrading

I access my home Assistant using the following URL: http://hassio.local:8123. I noticed that the Hassio tab was missing and I am not sure how to access the configuration.yaml file. What would be the easiest way to restore the tab?

I had this happen when I commented out the “discovery” line in the configuration.yaml. I was able to get it back by adding to your config file

# Enable hassio tab

As Hassio tab is missing, I am not sure how to reach the configuration.yaml file

Can you get to it by typing it directly?