I'm glad you asked.
Google deprecated conversational actions like the original TRIGGERcmd (and Execute Comando) Google Assistant actions.
So on Google Home devices, please enable the TRIGGERcmd Smart Home action.
It works better anyway. It creates a smart home device for each command, and because Google has a list of those devices ahead of time, it does a better job of matching your words to your commands.
Instead of, "Hey Google, ask TRIGGERcmd to run Calculator" you'll say, "Hey Google, turn on Calculator".