Cant find gn or autoninja for chromium development

I have previously followed a tutorial on setting up chromium development for mac from here. I had this all working. I then restarted my machine but now I can't use gn or autoninja I get the following errors

zsh: command not found: gn

zsh: command not found: autoninja

I have checked my path and setup it up again using the find_depot_tools.py script and it shows as being correctly setup. I'm not totally sure what I can do to fix this or why it has even happened. If anyone could shed some light on this I would be very grateful.

Perhaps the easiest thing would be to reinstall these, but I'm not totally sure how to do this as they are both chrome specific tools as far as I can tell.

Solution

I fixed this by running the command in the command in chromium/src and ensuring my path was correctly set.

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