Running autorun html command line from Cron

when I run the command line from a terminal it runs fine, by when I run it through Cron I get the error of file not found. I solved that problem before but I couldn’t remember what I did.

running Firefox, it doesn’t have that option of chrome to make file accessible.

What command line do you use in Cron?

Does Cron start Chrome as a normal user? (not some kind of locked down system account)?

running cron as user. I’m running userland Linux on my phone so that I can manage it on the go.

just a simple Firefox start.html

cron started Firefox ok. just that Firefox cannot read the local autorun html file