'Hammerspoon is not running' Error message when executing hammerspoon command from a cron in macos Sequoia 15.3

[bgmort]

I have a cron that runs every 5 minutes to trigger a hammerspoon notification. After an update to macos Sequoia 15.3, when the cron runs, it frequently (but not always) causes this popup to show:

Hammerspoon is not running. Would you like to launch it now?

The command the cron runs is essentially this:

/opt/homebrew/bin/hs -c "hs.notify.new({title='Hello', subTitle='world', informativeText='text'})"

If I select Launch, then my notification is shown, and if I click cancel, it's not. But Hammerspoon is already running separately. It seems that it's unable to find the running process.

When I run the same command directly rather than as a cron, I never get the popup.

[dmgerman]

Run the script from a terminal (add a while true and inside a sleep and your hs command). If it does not fail, it is definitely the permissions.